GMAT Verbal: Reading Comprehension Main Idea and Detail 1 — Questions and Answers

Question 1: Passage: 'The decline of bee populations worldwide has alarmed ecologists and agricultural scientists alike. Bees pollinate roughly one-third of the food crops humans consume, and their disappearance would cascade through food chains in unpredictable ways. Habitat loss, pesticide exposure, and the spread of parasitic mites have each been implicated, though researchers debate which factor is most significant. Some evidence suggests that neonicotinoid pesticides disrupt bees' navigational abilities, preventing them from returning to their hives.' The primary purpose of this passage is to:

Argue that neonicotinoid pesticides are the sole cause of bee population decline
Describe the problem of declining bee populations and identify contributing factors (Correct answer)
Propose solutions to the crisis facing bee populations globally
Explain how bees navigate using chemical signals

Correct answer: Describe the problem of declining bee populations and identify contributing factors

The passage introduces the problem (declining bee populations), explains its importance (one-third of food crops), and lists multiple contributing factors. It does not advocate for one cause or propose solutions.

The passage is structured around a central problem (bee decline), its significance (food crop pollination), and multiple potential causes. Answer B captures this descriptive, multi-causal structure. A is wrong because the passage says neonicotinoids are one factor among several. C is wrong because no solutions are offered. D is wrong because navigational disruption is a side detail, not the focus.

Question 2: Passage: 'The decline of bee populations worldwide has alarmed ecologists and agricultural scientists alike. Bees pollinate roughly one-third of the food crops humans consume, and their disappearance would cascade through food chains in unpredictable ways. Habitat loss, pesticide exposure, and the spread of parasitic mites have each been implicated, though researchers debate which factor is most significant. Some evidence suggests that neonicotinoid pesticides disrupt bees' navigational abilities, preventing them from returning to their hives.' According to the passage, which of the following is true about the causes of bee population decline?

Scientists have reached consensus that habitat loss is the primary cause
Parasitic mites have been ruled out as a contributing factor
Multiple factors have been identified, but their relative importance is disputed (Correct answer)
Neonicotinoid pesticides have been definitively proven to kill bees directly

Correct answer: Multiple factors have been identified, but their relative importance is disputed

The passage explicitly states that 'researchers debate which factor is most significant,' confirming that multiple factors exist but their ranking is disputed.

Answer C directly reflects the passage's statement that habitat loss, pesticides, and mites 'have each been implicated, though researchers debate which factor is most significant.' A contradicts this — no consensus is mentioned. B contradicts the passage, which lists mites as implicated. D overstates the passage's claim; it says neonicotinoids 'disrupt navigational abilities,' not that they directly kill bees.

Question 3: Passage: 'Urban heat islands — metropolitan areas significantly warmer than their rural surroundings — form primarily because dark paved surfaces and buildings absorb and retain solar radiation. Vegetation, which naturally cools through evapotranspiration, is largely replaced by impervious surfaces. As a result, city temperatures can exceed nearby rural areas by 1–7°C. This temperature differential intensifies overnight as stored heat radiates outward. Urban heat islands increase energy demand for cooling, worsen air quality, and raise heat-related illness risks, disproportionately affecting elderly and low-income residents who lack access to air conditioning.' The main idea of this passage is:

Dark surfaces are the leading cause of climate change in cities
Urban heat islands are caused by physical characteristics of cities and create health and energy consequences (Correct answer)
Low-income residents suffer the most from all urban environmental problems
City planners should replace pavement with vegetation to solve the urban heat island problem

Correct answer: Urban heat islands are caused by physical characteristics of cities and create health and energy consequences

The passage explains what causes urban heat islands (dark surfaces, reduced vegetation) and what effects they produce (energy demand, air quality, health risks). B captures both dimensions.

B is correct because it summarizes the two key components: physical causes and multifaceted consequences. A is too narrow and overstates one detail. C is mentioned as one effect but is not the central theme. D is an inference not stated in the passage — the author never recommends solutions.

Question 4: Passage: 'Urban heat islands — metropolitan areas significantly warmer than their rural surroundings — form primarily because dark paved surfaces and buildings absorb and retain solar radiation. Vegetation, which naturally cools through evapotranspiration, is largely replaced by impervious surfaces. As a result, city temperatures can exceed nearby rural areas by 1–7°C. This temperature differential intensifies overnight as stored heat radiates outward. Urban heat islands increase energy demand for cooling, worsen air quality, and raise heat-related illness risks, disproportionately affecting elderly and low-income residents who lack access to air conditioning.' According to the passage, why does the temperature differential between cities and rural areas intensify at night?

Rural areas cool faster because they have more wind exposure
Cars and factories continue generating heat throughout the night
Heat stored in urban surfaces during the day radiates outward after sundown (Correct answer)
Vegetation in rural areas actively generates cooling at night

Correct answer: Heat stored in urban surfaces during the day radiates outward after sundown

The passage states that 'stored heat radiates outward' overnight, explaining the intensification of the temperature gap at night.

C directly paraphrases the passage: 'This temperature differential intensifies overnight as stored heat radiates outward.' A and B are not mentioned in the passage. D misrepresents evapotranspiration, which is a daytime process driven by sunlight and is not described as nocturnal.

Question 5: Passage: 'The Columbian Exchange — the transfer of plants, animals, diseases, and ideas between the Americas and the Old World following Columbus's 1492 voyage — fundamentally reshaped global demographics and diets. European diseases, to which indigenous Americans had no immunity, devastated native populations by up to 90% in some regions. Simultaneously, New World crops like potatoes, maize, and tomatoes transformed European and Asian diets, enabling population growth that would not otherwise have been possible. The exchange was therefore a paradox: catastrophic for indigenous peoples but nutritionally transformative for much of the world.' The author describes the Columbian Exchange as a 'paradox' because:

Columbus did not intend to create the exchange when he sailed in 1492
The exchange produced devastating consequences for some populations while benefiting others (Correct answer)
European diseases were unintentionally introduced to the Americas
Potatoes and maize became staple crops in regions where they were not originally cultivated

Correct answer: The exchange produced devastating consequences for some populations while benefiting others

The author uses 'paradox' to capture the simultaneous catastrophe for indigenous Americans and nutritional benefit for Europeans and Asians — contradictory outcomes from the same event.

B correctly identifies the two opposing dimensions the author juxtaposes: 'catastrophic for indigenous peoples but nutritionally transformative for much of the world.' A addresses Columbus's intent, not mentioned as part of the paradox. C focuses on one element of the harm side only. D is a detail about crops, not the heart of the paradox.

Question 6: Passage: 'The Columbian Exchange — the transfer of plants, animals, diseases, and ideas between the Americas and the Old World following Columbus's 1492 voyage — fundamentally reshaped global demographics and diets. European diseases, to which indigenous Americans had no immunity, devastated native populations by up to 90% in some regions. Simultaneously, New World crops like potatoes, maize, and tomatoes transformed European and Asian diets, enabling population growth that would not otherwise have been possible. The exchange was therefore a paradox: catastrophic for indigenous peoples but nutritionally transformative for much of the world.' Which of the following can be inferred from the passage about New World crops?

Potatoes, maize, and tomatoes were grown in Europe before 1492
These crops supported larger populations in Europe and Asia than would have existed otherwise (Correct answer)
The introduction of these crops was deliberately planned by European colonizers
New World crops caused demographic decline in Asia and Europe

Correct answer: These crops supported larger populations in Europe and Asia than would have existed otherwise

The passage states that New World crops enabled 'population growth that would not otherwise have been possible,' implying larger populations resulted from their introduction.

B is a direct inference from 'enabling population growth that would not otherwise have been possible' — populations grew larger because of these crops. A contradicts the Columbian Exchange premise. C is not mentioned. D contradicts the passage, which credits these crops with enabling population growth in Europe and Asia.

Question 7: Passage: 'Microplastics — particles smaller than 5 millimeters — have been detected in environments ranging from Arctic ice to deep-sea trenches. They originate from the breakdown of larger plastic items, synthetic textile fibers released during washing, and industrial pellets called nurdles. Marine organisms at every level of the food web ingest microplastics, either mistaking them for food or consuming contaminated prey. Researchers have found microplastics in human blood and lungs, though the long-term health consequences remain poorly understood. Regulatory bodies in several countries have begun restricting intentionally added microplastics in cosmetics, but the broader problem of secondary microplastics from plastic degradation remains largely unaddressed.' The passage suggests that current regulatory efforts are:

Effectively addressing all major sources of microplastic pollution
Focused on a limited subset of microplastic sources while larger sources go unregulated (Correct answer)
Primarily concerned with human health risks from microplastics in blood
Based on a thorough scientific understanding of long-term health consequences

Correct answer: Focused on a limited subset of microplastic sources while larger sources go unregulated

The passage notes that regulations target 'intentionally added microplastics in cosmetics' but that secondary microplastics from plastic degradation 'remains largely unaddressed,' indicating incomplete regulatory coverage.

B is correct because the passage explicitly contrasts the narrow regulatory focus (cosmetics with intentionally added microplastics) against the broader unaddressed problem (secondary microplastics from degradation). A is contradicted by 'largely unaddressed.' C misrepresents the regulatory focus. D is contradicted by 'long-term health consequences remain poorly understood.'

Question 8: Passage: 'Microplastics — particles smaller than 5 millimeters — have been detected in environments ranging from Arctic ice to deep-sea trenches. They originate from the breakdown of larger plastic items, synthetic textile fibers released during washing, and industrial pellets called nurdles. Marine organisms at every level of the food web ingest microplastics, either mistaking them for food or consuming contaminated prey. Researchers have found microplastics in human blood and lungs, though the long-term health consequences remain poorly understood. Regulatory bodies in several countries have begun restricting intentionally added microplastics in cosmetics, but the broader problem of secondary microplastics from plastic degradation remains largely unaddressed.' According to the passage, which of the following is a source of microplastics?

Industrial chemicals released during manufacturing processes
Synthetic fibers shed when washing clothing (Correct answer)
Microorganisms that break down ocean floor sediments
Cosmetic products banned by regulatory bodies

Correct answer: Synthetic fibers shed when washing clothing

The passage lists 'synthetic textile fibers released during washing' as one of three identified sources of microplastics.

B directly matches the passage's statement that microplastics originate from 'synthetic textile fibers released during washing.' A is not mentioned. C is fabricated. D misreads the passage — regulations restrict intentionally added microplastics in cosmetics, but cosmetics are not described as a source here.

Question 9: Passage: 'The Renaissance concept of the 'universal man' — an individual accomplished in arts, sciences, letters, and physical pursuits — found its most celebrated expression in figures like Leonardo da Vinci and Leon Battista Alberti. This ideal reflected a humanist conviction that human potential was boundless and that knowledge in one domain enriched understanding in others. However, historians caution against romanticizing this ideal. Specialization was less demanded in an era when the total body of codified human knowledge was far smaller. The same breadth of achievement would be impossible today without sacrificing depth in any single field.' What is the author's attitude toward the Renaissance ideal of the 'universal man'?

Entirely admiring, presenting it as a model that modern individuals should emulate
Critically dismissive, arguing the ideal was never truly achieved
Balanced, acknowledging its historical basis while noting why it cannot apply to the modern era (Correct answer)
Indifferent, presenting the concept without evaluation

Correct answer: Balanced, acknowledging its historical basis while noting why it cannot apply to the modern era

The author explains the humanist logic behind the ideal and celebrates its exemplars, then introduces a 'however' turn to note the historical conditions that made it possible — and impossible today. This is a balanced perspective.

C captures the author's two-part stance: genuine appreciation for the Renaissance ideal's logic, combined with the caveat that the same feat is impossible today due to expanded knowledge. A is too one-sided — the author adds important qualifications. B is too negative — the author doesn't dispute that figures like Leonardo achieved the ideal. D is wrong because the author clearly evaluates and contextualizes the concept.

Question 10: Passage: 'The Renaissance concept of the 'universal man' — an individual accomplished in arts, sciences, letters, and physical pursuits — found its most celebrated expression in figures like Leonardo da Vinci and Leon Battista Alberti. This ideal reflected a humanist conviction that human potential was boundless and that knowledge in one domain enriched understanding in others. However, historians caution against romanticizing this ideal. Specialization was less demanded in an era when the total body of codified human knowledge was far smaller. The same breadth of achievement would be impossible today without sacrificing depth in any single field.' The passage implies that a modern person attempting to replicate the 'universal man' ideal would most likely:

Succeed if they devoted sufficient time and effort to each domain
Lack the motivation that Renaissance figures possessed
Achieve superficial coverage of many fields rather than deep expertise in any (Correct answer)
Be admired by historians for reviving a lost tradition

Correct answer: Achieve superficial coverage of many fields rather than deep expertise in any

The passage states that 'the same breadth of achievement would be impossible today without sacrificing depth,' implying that a modern universal person could only achieve breadth at the cost of depth.

C is directly supported: breadth today requires 'sacrificing depth in any single field.' A contradicts the passage — effort is not the limiting factor; the sheer volume of knowledge is. B introduces motivation, not mentioned in the passage. D is speculative and not supported.

Question 11: Passage: 'Cognitive behavioral therapy (CBT) has emerged as one of the most empirically validated treatments for a range of psychological disorders, including depression, anxiety, and post-traumatic stress. Unlike psychoanalytic approaches that emphasize uncovering unconscious conflicts, CBT focuses on identifying and restructuring maladaptive thought patterns that contribute to emotional distress. Sessions are typically structured, time-limited, and goal-oriented. A substantial body of randomized controlled trials supports its efficacy, though critics note that its benefits may be less durable than those of longer-term therapies and that it may be less effective for patients with complex trauma histories.' The primary contrast drawn in the passage is between:

CBT and medication-based approaches to psychological disorders
CBT's structured approach and the unconscious-focused approach of psychoanalysis (Correct answer)
Short-term and long-term outcomes of all psychological therapies
Anxiety treatment and depression treatment within CBT

Correct answer: CBT's structured approach and the unconscious-focused approach of psychoanalysis

The passage explicitly contrasts CBT's focus on 'maladaptive thought patterns' with psychoanalytic approaches that 'emphasize uncovering unconscious conflicts.'

B is correct — the passage's central contrast is between CBT's cognitive focus and psychoanalysis's unconscious focus. A is not discussed — medication is never mentioned. C describes a concern raised by critics, not the primary contrast. D is not a contrast the passage draws.

Question 12: Passage: 'Cognitive behavioral therapy (CBT) has emerged as one of the most empirically validated treatments for a range of psychological disorders, including depression, anxiety, and post-traumatic stress. Unlike psychoanalytic approaches that emphasize uncovering unconscious conflicts, CBT focuses on identifying and restructuring maladaptive thought patterns that contribute to emotional distress. Sessions are typically structured, time-limited, and goal-oriented. A substantial body of randomized controlled trials supports its efficacy, though critics note that its benefits may be less durable than those of longer-term therapies and that it may be less effective for patients with complex trauma histories.' Based on the passage, which type of patient might receive less benefit from CBT?

A patient experiencing mild generalized anxiety
A patient with a straightforward single-episode depression
A patient with a history of multiple severe traumatic events (Correct answer)
A patient seeking a time-limited and structured treatment

Correct answer: A patient with a history of multiple severe traumatic events

The passage states that CBT 'may be less effective for patients with complex trauma histories,' which best describes someone with multiple severe traumatic events.

C matches the passage's mention of 'patients with complex trauma histories.' A and B are conditions the passage lists as within CBT's range of efficacy (anxiety and depression are mentioned). D describes a patient who would align well with CBT's time-limited, structured format.

Question 13: Passage: 'The development of high-yield crop varieties during the Green Revolution of the 1960s and 1970s dramatically increased food production in Asia and Latin America. Championed by agronomist Norman Borlaug, the new strains of wheat and rice responded well to synthetic fertilizers and produced far more grain per acre than traditional varieties. Critics have since argued that the Green Revolution's benefits were unevenly distributed, favoring wealthier farmers who could afford inputs, while contributing to soil degradation and water depletion through intensive irrigation. Others maintain that without these innovations, mass famine would have occurred.' Which of the following best describes the structure of this passage?

A problem is identified, and then a solution is proposed
An achievement is described, followed by critiques of it and a defense of its necessity (Correct answer)
Two opposing scientific theories are presented and evaluated
A historical figure's biography is summarized chronologically

Correct answer: An achievement is described, followed by critiques of it and a defense of its necessity

The passage describes the Green Revolution as an achievement, then presents critics' objections, then presents defenders' counter-argument. This fits the 'achievement → critique → defense' structure.

B correctly maps the passage structure: (1) description of the achievement (increased food production), (2) critics' concerns (inequality, environmental damage), (3) defenders' counter (famine prevention). A is wrong — no solution is proposed to a problem. C is wrong — these are historical arguments, not scientific theories. D is wrong — Borlaug is mentioned briefly, not biographically.

Question 14: Passage: 'The development of high-yield crop varieties during the Green Revolution of the 1960s and 1970s dramatically increased food production in Asia and Latin America. Championed by agronomist Norman Borlaug, the new strains of wheat and rice responded well to synthetic fertilizers and produced far more grain per acre than traditional varieties. Critics have since argued that the Green Revolution's benefits were unevenly distributed, favoring wealthier farmers who could afford inputs, while contributing to soil degradation and water depletion through intensive irrigation. Others maintain that without these innovations, mass famine would have occurred.' According to the passage, critics of the Green Revolution argue that it:

Failed to increase crop yields in Asia and Latin America
Primarily benefited farmers who could afford modern agricultural inputs (Correct answer)
Was the direct cause of multiple famines in developing countries
Relied on irrigation methods that were quickly abandoned

Correct answer: Primarily benefited farmers who could afford modern agricultural inputs

The passage states critics argued benefits 'favor[ed] wealthier farmers who could afford inputs,' which matches B.

B directly quotes the critics' position as stated in the passage. A contradicts the passage — yield increases are described as dramatic. C is the opposite of what critics or defenders say; defenders argue it prevented famine. D misrepresents — irrigation is named as contributing to depletion, not as something that was abandoned.

Question 15: Passage: 'Sleep deprivation has become a widespread condition in modern industrialized societies, driven by extended work hours, digital screen use, and the artificial extension of daylight through electric lighting. Research consistently links insufficient sleep to impaired cognitive function, reduced immune response, elevated cortisol levels, and increased risk of metabolic disorders including type 2 diabetes. Despite this evidence, cultural narratives in many high-performing environments glorify minimal sleep as a badge of productivity. The tension between biological need and cultural expectation places many workers in a chronic state of underperformance masked by caffeine and adaptation.' The author's main argument is that:

Caffeine is an effective substitute for adequate sleep in professional settings
Cultural glorification of sleep deprivation conflicts with well-documented biological needs (Correct answer)
Metabolic disorders are the most serious consequence of sleep deprivation
Electric lighting is the primary driver of sleep deprivation in modern society

Correct answer: Cultural glorification of sleep deprivation conflicts with well-documented biological needs

The passage presents evidence of sleep's biological necessity, then contrasts it with cultural narratives that glorify sleep deprivation, culminating in the observation that workers suffer as a result. B captures this central tension.

B captures the core opposition the author constructs: biological need (supported by extensive research) versus cultural expectation (glorifying minimal sleep). A is contradicted — caffeine is described as a mask, not an effective substitute. C focuses on one health outcome, not the central argument. D overstates — electric lighting is one listed factor, not the primary driver.

Question 16: Passage: 'Sleep deprivation has become a widespread condition in modern industrialized societies, driven by extended work hours, digital screen use, and the artificial extension of daylight through electric lighting. Research consistently links insufficient sleep to impaired cognitive function, reduced immune response, elevated cortisol levels, and increased risk of metabolic disorders including type 2 diabetes. Despite this evidence, cultural narratives in many high-performing environments glorify minimal sleep as a badge of productivity. The tension between biological need and cultural expectation places many workers in a chronic state of underperformance masked by caffeine and adaptation.' The phrase 'underperformance masked by caffeine and adaptation' most nearly means that:

Caffeine fully compensates for the cognitive losses caused by sleep deprivation
Workers appear to function adequately but are operating below their full capacity due to insufficient sleep (Correct answer)
Adaptation allows workers to permanently adjust to lower sleep needs over time
Caffeine consumption increases the risk of metabolic disorders in sleep-deprived workers

Correct answer: Workers appear to function adequately but are operating below their full capacity due to insufficient sleep

The phrase implies that sleep-deprived workers are underperforming but disguise this through caffeine use and behavioral adaptation — they appear functional but are not at full capacity.

B correctly interprets 'masked' — caffeine and adaptation create the appearance of normal functioning while underlying underperformance persists. A contradicts the implication of masking; if it fully compensated, there would be nothing to mask. C misreads 'adaptation' as permanent biological adjustment — the context suggests behavioral coping. D introduces a causal claim not stated in the passage.

Question 17: Passage: 'The printing press, introduced to Europe by Johannes Gutenberg around 1440, is widely credited with enabling the rapid dissemination of ideas that fueled the Renaissance, the Protestant Reformation, and the Scientific Revolution. Before the press, books were hand-copied by scribes — a process that was expensive, slow, and prone to error. The press reduced the cost of books dramatically, expanded literacy, and allowed ideas to spread across borders without the distortions of manual transcription. Some historians, however, argue that the press's role has been overstated and that the ideas of the Reformation, for instance, had complex social and economic roots independent of any communications technology.' Which of the following would most strengthen the historians' counterargument mentioned in the passage?

Evidence that Gutenberg's press was used primarily to print religious texts in its early decades
Data showing that Lutheran ideas spread most rapidly in regions with the highest press penetration
Documentation that the Protestant Reformation began in regions where printing presses were scarce (Correct answer)
Records showing that hand-copied books remained more expensive than printed ones for decades after 1440

Correct answer: Documentation that the Protestant Reformation began in regions where printing presses were scarce

The historians argue the Reformation had roots independent of the printing press. Evidence that Reformation ideas spread in regions without presses would support this — showing the press was not necessary.

C would strengthen the claim that the Reformation had complex roots independent of printing technology — if it began where presses were scarce, the press clearly wasn't the driver. A is neutral — printing religious texts doesn't undermine or support the press's role in the Reformation. B would actually weaken the historians' argument by suggesting press penetration correlates with spread. D is irrelevant to the Reformation argument.

Question 18: Passage: 'The printing press, introduced to Europe by Johannes Gutenberg around 1440, is widely credited with enabling the rapid dissemination of ideas that fueled the Renaissance, the Protestant Reformation, and the Scientific Revolution. Before the press, books were hand-copied by scribes — a process that was expensive, slow, and prone to error. The press reduced the cost of books dramatically, expanded literacy, and allowed ideas to spread across borders without the distortions of manual transcription. Some historians, however, argue that the press's role has been overstated and that the ideas of the Reformation, for instance, had complex social and economic roots independent of any communications technology.' The passage mentions that scribal copying was 'prone to error' in order to:

Argue that medieval scribes were poorly trained compared to modern standards
Highlight an advantage of the printing press over the prior method of book reproduction (Correct answer)
Suggest that most pre-press books contained significant factual inaccuracies
Provide a reason why the Protestant Reformation rejected Catholic scripture

Correct answer: Highlight an advantage of the printing press over the prior method of book reproduction

The passage contrasts scribal copying's flaws (expensive, slow, error-prone) with the press's benefits (lower cost, faster, accurate). The mention of errors is to support the press's advantage in accuracy.

B is correct — the error-prone nature of scribal copying is one of three listed deficiencies that the press overcame. A is not supported — the passage doesn't address scribes' training. C goes beyond the passage's claim. D makes a connection to the Reformation not stated or implied in this sentence.

Question 19: Passage: 'The concept of 'social capital' — the networks, norms, and trust that facilitate collective action — was developed most systematically by sociologist Robert Putnam in his influential work on Italian regional governance and later in his study of civic engagement in the United States. Putnam distinguished between 'bonding' social capital, which ties together members of homogeneous groups, and 'bridging' social capital, which connects people across different social groups. He argued that communities with high bridging social capital tended to have more effective governments and better economic outcomes. Critics contend that Putnam's framework overemphasizes consensus and downplays conflict as a legitimate and sometimes productive force in civic life.' According to the passage, Putnam associates high bridging social capital with:

Stronger internal cohesion within homogeneous communities
More effective governance and improved economic performance (Correct answer)
The development of trust within ethnically similar groups
Rejection of conflict as a mechanism for social change

Correct answer: More effective governance and improved economic performance

The passage states Putnam 'argued that communities with high bridging social capital tended to have more effective governments and better economic outcomes.'

B directly quotes the passage's description of Putnam's argument. A describes bonding social capital, not bridging. C conflates the two types — trust within homogeneous groups is bonding capital. D describes critics' objection to Putnam's framework, not his actual claim.

Question 20: Passage: 'The concept of 'social capital' — the networks, norms, and trust that facilitate collective action — was developed most systematically by sociologist Robert Putnam in his influential work on Italian regional governance and later in his study of civic engagement in the United States. Putnam distinguished between 'bonding' social capital, which ties together members of homogeneous groups, and 'bridging' social capital, which connects people across different social groups. He argued that communities with high bridging social capital tended to have more effective governments and better economic outcomes. Critics contend that Putnam's framework overemphasizes consensus and downplays conflict as a legitimate and sometimes productive force in civic life.' The critics' objection to Putnam's framework, as described in the passage, is best characterized as:

A methodological complaint about how Putnam measured social capital
A concern that Putnam's focus on harmony neglects the constructive role of conflict (Correct answer)
A dispute about whether Italy and the United States are comparable case studies
An argument that bridging social capital is less important than bonding social capital

Correct answer: A concern that Putnam's focus on harmony neglects the constructive role of conflict

Critics argue Putnam 'overemphasizes consensus and downplays conflict as a legitimate and sometimes productive force,' which is a concern about his theoretical framework, not his methodology or case selection.

B accurately captures the critics' objection: that a framework centered on consensus and cooperation ignores conflict's productive civic role. A is a methodological critique not mentioned. C is about case comparability, not mentioned. D is a prioritization argument not found in the passage.

Question 21: Passage: 'Antibiotic resistance has emerged as one of the defining public health crises of the 21st century. Bacteria evolve resistance through natural selection: when antibiotics kill susceptible bacteria, resistant variants survive and reproduce, eventually dominating the population. Overuse and misuse of antibiotics in human medicine and agriculture accelerates this process. Particularly alarming is the spread of multi-drug resistant organisms — bacteria impervious to several antibiotic classes simultaneously. Despite urgent calls from international health bodies, new antibiotic development has slowed dramatically because the economic incentives for pharmaceutical companies favor drugs taken chronically over those used briefly in acute infections.' The passage identifies which of the following as a reason new antibiotic development has slowed?

Scientific barriers have made it impossible to identify new antibiotic compounds
Resistance develops too quickly for new antibiotics to be commercially viable
Pharmaceutical companies find antibiotics less profitable than drugs for chronic conditions (Correct answer)
International health bodies have discouraged new antibiotic research

Correct answer: Pharmaceutical companies find antibiotics less profitable than drugs for chronic conditions

The passage states that economic incentives 'favor drugs taken chronically over those used briefly in acute infections,' meaning antibiotics (short-course drugs) are less profitable — explaining slower development.

C directly captures the passage's explanation: antibiotics, used briefly, generate less revenue than chronic medications, reducing pharmaceutical investment. A is not mentioned — the passage implies the problem is economic, not scientific. B is not stated; the passage doesn't claim resistance eliminates commercial viability. D is the opposite of what the passage says — health bodies are calling for more development, not discouraging it.

Question 22: Passage: 'Antibiotic resistance has emerged as one of the defining public health crises of the 21st century. Bacteria evolve resistance through natural selection: when antibiotics kill susceptible bacteria, resistant variants survive and reproduce, eventually dominating the population. Overuse and misuse of antibiotics in human medicine and agriculture accelerates this process. Particularly alarming is the spread of multi-drug resistant organisms — bacteria impervious to several antibiotic classes simultaneously. Despite urgent calls from international health bodies, new antibiotic development has slowed dramatically because the economic incentives for pharmaceutical companies favor drugs taken chronically over those used briefly in acute infections.' The passage implies that the spread of multi-drug resistant organisms is 'particularly alarming' because:

These organisms are more contagious than ordinary bacteria
They can evade treatment using any single antibiotic from the current arsenal (Correct answer)
Resistance to one antibiotic class inevitably leads to resistance to all classes
Agricultural use of antibiotics is the primary driver of multi-drug resistance

Correct answer: They can evade treatment using any single antibiotic from the current arsenal

Multi-drug resistant organisms are 'impervious to several antibiotic classes simultaneously,' meaning standard treatment approaches are ineffective — which is what makes them particularly dangerous.

B correctly interprets the implication: resistance to multiple antibiotic classes simultaneously means the standard treatment toolkit fails. A is not mentioned — contagiousness is not addressed. C overstates — resistance to 'several' classes is not the same as all classes. D is a possible inference but not stated as the reason for alarm.

Question 23: Passage: 'The placebo effect — improvements in patient outcomes attributable to receiving treatment rather than to any active ingredient — has long puzzled researchers. Studies have shown that placebos can reduce pain, alleviate depression symptoms, and even improve conditions like irritable bowel syndrome. Recent neuroscientific research suggests that placebos trigger genuine physiological responses, including the release of endorphins and changes in brain activity patterns. This challenges the traditional view that the placebo effect is purely psychological. Some researchers advocate for 'open-label' placebos, in which patients are informed they are receiving an inactive treatment, yet still report improvements — suggesting that conscious belief may not be necessary for the effect to operate.' The 'open-label placebo' finding is significant because it:

Confirms that patients who believe they are receiving real treatment show the greatest improvements
Demonstrates that all placebo effects are caused by endorphin release
Suggests the placebo effect can operate even when patients know they are not receiving active treatment (Correct answer)
Proves that placebos are as effective as pharmaceutical drugs for all conditions

Correct answer: Suggests the placebo effect can operate even when patients know they are not receiving active treatment

Open-label placebos are significant because patients improve even when they know the treatment is inactive — undercutting the assumption that belief/expectation drives the effect.

C correctly identifies why open-label placebos are noteworthy: the effect persists without conscious deception, suggesting belief is not the sole mechanism. A is contradicted — open-label patients know they're not receiving real treatment. B overstates — endorphins are one mechanism mentioned, not the cause of all placebos. D is not claimed in the passage.

Question 24: Passage: 'The placebo effect — improvements in patient outcomes attributable to receiving treatment rather than to any active ingredient — has long puzzled researchers. Studies have shown that placebos can reduce pain, alleviate depression symptoms, and even improve conditions like irritable bowel syndrome. Recent neuroscientific research suggests that placebos trigger genuine physiological responses, including the release of endorphins and changes in brain activity patterns. This challenges the traditional view that the placebo effect is purely psychological. Some researchers advocate for 'open-label' placebos, in which patients are informed they are receiving an inactive treatment, yet still report improvements — suggesting that conscious belief may not be necessary for the effect to operate.' What was the 'traditional view' of the placebo effect that neuroscientific research is challenging?

That placebos had no measurable effect on patient outcomes
That the placebo effect was entirely a product of the patient's psychology, not physical processes (Correct answer)
That placebos worked only for psychological conditions like depression
That endorphin release was the mechanism behind all placebo improvements

Correct answer: That the placebo effect was entirely a product of the patient's psychology, not physical processes

The passage states that recent research 'challenges the traditional view that the placebo effect is purely psychological,' meaning the traditional view held it was a psychological, not physiological, phenomenon.

B directly quotes the passage's description of the traditional view: 'purely psychological.' A is too extreme — the traditional view acknowledged the effect existed, just attributed it to psychology. C narrows the traditional view to psychological conditions only, which is not stated. D describes recent neuroscientific findings, not the traditional view.

Question 25: Passage: 'Supply chain disruptions during the 2020-2021 pandemic revealed structural vulnerabilities in the just-in-time manufacturing model that had dominated global industry for decades. Just-in-time systems minimize inventory by synchronizing production closely with demand, reducing storage costs and waste. When simultaneous shocks hit multiple supply nodes — semiconductor factories, shipping ports, and raw material producers — the absence of inventory buffers amplified the disruptions rather than absorbing them. Some economists argue that post-pandemic, firms should adopt 'just-in-case' strategies that maintain larger safety stocks, accepting higher carrying costs as insurance against future disruptions.' According to the passage, why did the just-in-time model perform poorly during the pandemic?

Manufacturers lacked the technology to track supply chain disruptions in real time
Firms had too much inventory, causing warehouses to fill and production to slow
The absence of inventory buffers meant disruptions could not be absorbed and instead were amplified (Correct answer)
Consumer demand fell so sharply that supply chains had no incentive to continue production

Correct answer: The absence of inventory buffers meant disruptions could not be absorbed and instead were amplified

The passage explicitly states that 'the absence of inventory buffers amplified the disruptions rather than absorbing them,' which is the direct explanation for just-in-time's failure.

C is a direct paraphrase of the passage. A is not mentioned. B is the opposite of what happened — just-in-time minimizes inventory, so there was too little, not too much. D misrepresents the disruption — the issue was supply shocks, not demand collapse.

Question 26: Passage: 'Supply chain disruptions during the 2020-2021 pandemic revealed structural vulnerabilities in the just-in-time manufacturing model that had dominated global industry for decades. Just-in-time systems minimize inventory by synchronizing production closely with demand, reducing storage costs and waste. When simultaneous shocks hit multiple supply nodes — semiconductor factories, shipping ports, and raw material producers — the absence of inventory buffers amplified the disruptions rather than absorbing them. Some economists argue that post-pandemic, firms should adopt 'just-in-case' strategies that maintain larger safety stocks, accepting higher carrying costs as insurance against future disruptions.' The passage implies that a 'just-in-case' strategy involves a trade-off between:

Production speed and product quality
Higher inventory costs and greater resilience to supply disruptions (Correct answer)
Environmental sustainability and cost efficiency
Technology investment and labor costs

Correct answer: Higher inventory costs and greater resilience to supply disruptions

Just-in-case strategies 'maintain larger safety stocks, accepting higher carrying costs as insurance against future disruptions' — the trade-off is between paying more for inventory and gaining protection against disruptions.

B captures the explicit trade-off: higher carrying costs (cost) in exchange for resilience (benefit). A is not mentioned. C is not mentioned. D is not mentioned.

Question 27: Passage: 'The term 'biophilia,' coined by biologist E.O. Wilson, proposes that humans have an innate psychological need to connect with other living organisms and the natural world — a legacy of the millions of years our ancestors spent in natural environments. Proponents point to studies showing that exposure to nature reduces stress hormones, lowers blood pressure, and accelerates recovery from illness. Urban designers influenced by biophilia incorporate natural elements such as plants, water features, and natural light into buildings to improve occupant well-being. Skeptics, however, argue that the evidence base for biophilia's clinical benefits is inconsistent and that cultural factors may explain reported preferences for natural environments as much as any evolutionary predisposition.' The main point of disagreement between biophilia proponents and skeptics concerns:

Whether E.O. Wilson correctly identified the evolutionary origins of the theory
The reliability and interpretation of evidence for biophilia's health benefits (Correct answer)
Whether natural elements can be effectively incorporated into urban buildings
The degree to which human DNA has changed since ancestral environments

Correct answer: The reliability and interpretation of evidence for biophilia's health benefits

Proponents cite studies showing health benefits; skeptics say the evidence is 'inconsistent' and cultural factors may explain the effects instead. The core disagreement is about the evidence's strength and interpretation.

B correctly identifies the crux: proponents trust the health studies; skeptics find them inconsistent and point to alternative explanations. A is not debated — neither side disputes Wilson's role. C is about urban design, not the scientific debate. D introduces genetics, not mentioned.

Question 28: Passage: 'The term 'biophilia,' coined by biologist E.O. Wilson, proposes that humans have an innate psychological need to connect with other living organisms and the natural world — a legacy of the millions of years our ancestors spent in natural environments. Proponents point to studies showing that exposure to nature reduces stress hormones, lowers blood pressure, and accelerates recovery from illness. Urban designers influenced by biophilia incorporate natural elements such as plants, water features, and natural light into buildings to improve occupant well-being. Skeptics, however, argue that the evidence base for biophilia's clinical benefits is inconsistent and that cultural factors may explain reported preferences for natural environments as much as any evolutionary predisposition.' Which of the following, if true, would most support the skeptics' position?

A study finding that exposure to indoor plants reduces reported anxiety in hospital patients
Research showing that stress hormone reductions from nature exposure occur only in cultures that value outdoor living (Correct answer)
Evidence that E.O. Wilson never conducted controlled clinical trials to test biophilia
Data showing that urban green spaces are used more frequently by higher-income residents

Correct answer: Research showing that stress hormone reductions from nature exposure occur only in cultures that value outdoor living

Skeptics argue cultural factors may explain preferences for nature. If stress benefits only appear in cultures that value outdoor living, that supports the cultural rather than evolutionary explanation.

B directly supports the skeptics' claim that 'cultural factors may explain reported preferences for natural environments' — if benefits are culture-dependent, they're not innate evolutionary predispositions. A supports proponents, not skeptics. C is an ad hominem point that doesn't directly address the evidence debate. D is about park usage patterns, not about the mechanism of biophilia effects.

Question 29: Passage: 'Gig economy platforms — digital intermediaries connecting freelance workers with customers — have disrupted traditional employment models across transportation, delivery, and skilled services. Proponents argue that gig work offers flexibility that appeals to workers who value autonomy over benefits, and that platforms lower barriers to market entry for small-scale service providers. Critics respond that gig companies externalize risks onto workers by classifying them as independent contractors rather than employees, thereby avoiding obligations to provide health insurance, paid leave, and minimum wage protections. Several jurisdictions have enacted legislation requiring reclassification or benefit contributions, while others have resisted such regulation.' Based on the passage, the central legal and economic dispute about gig economy platforms involves:

Whether digital platforms can legally operate without government licenses
How worker classification affects the distribution of economic risk and benefits between companies and workers (Correct answer)
Whether gig work quality is comparable to services provided by traditional employees
The tax obligations of freelance workers operating through digital platforms

Correct answer: How worker classification affects the distribution of economic risk and benefits between companies and workers

The passage centers on whether gig workers should be classified as contractors or employees, which determines who bears risks and costs (health insurance, leave, wage protections). This is the core dispute described.

B captures the essential dispute: contractor vs. employee classification determines which party bears insurance, leave, and wage costs — i.e., how economic risk is distributed. A is not mentioned. C is not addressed. D is not the focus of the passage.

Question 30: Passage: 'Gig economy platforms — digital intermediaries connecting freelance workers with customers — have disrupted traditional employment models across transportation, delivery, and skilled services. Proponents argue that gig work offers flexibility that appeals to workers who value autonomy over benefits, and that platforms lower barriers to market entry for small-scale service providers. Critics respond that gig companies externalize risks onto workers by classifying them as independent contractors rather than employees, thereby avoiding obligations to provide health insurance, paid leave, and minimum wage protections. Several jurisdictions have enacted legislation requiring reclassification or benefit contributions, while others have resisted such regulation.' The passage implies that workers who prefer gig work most likely value:

Job security and employer-provided retirement contributions
Flexible schedules and independence over guaranteed benefits (Correct answer)
Union representation and collective bargaining rights
Full-time hours and consistent income streams

Correct answer: Flexible schedules and independence over guaranteed benefits

Proponents argue gig work 'offers flexibility that appeals to workers who value autonomy over benefits' — those preferring gig work prioritize flexibility and autonomy.

B directly reflects the passage: gig work's appeal is 'flexibility' and 'autonomy over benefits.' A describes traditional employment benefits that gig classification avoids. C is not mentioned. D describes full-time employment characteristics, not gig work.

Question 31: Passage: 'The discovery of the double-helix structure of DNA by Watson and Crick in 1953 — building on X-ray crystallography images produced by Rosalind Franklin — is among the most celebrated achievements in the history of science. The structure immediately suggested a mechanism for genetic replication: the two complementary strands could separate and serve as templates for new molecules. Subsequent decades saw the development of recombinant DNA technology, the polymerase chain reaction, and ultimately the sequencing of the human genome — all downstream consequences of understanding DNA's structure. Historians of science have since examined the degree to which Franklin's contributions were acknowledged during her lifetime, finding that recognition was substantially delayed.' The passage suggests that Watson and Crick's discovery was particularly significant because:

It proved definitively that DNA, not proteins, carried genetic information
Its structure directly implied a mechanism by which genetic information could be copied (Correct answer)
It was the first application of X-ray crystallography to biological molecules
Watson and Crick independently arrived at the structure without relying on prior research

Correct answer: Its structure directly implied a mechanism by which genetic information could be copied

The passage states that 'the structure immediately suggested a mechanism for genetic replication,' making the discovery significant both descriptively and mechanistically.

B directly captures the passage's explanation of significance: the double-helix structure implied how replication worked. A is not mentioned in this passage. C is wrong — Franklin used X-ray crystallography, but the passage doesn't claim it was the first biological application. D is wrong — the passage explicitly notes the discovery built on Franklin's work.

Question 32: Passage: 'The discovery of the double-helix structure of DNA by Watson and Crick in 1953 — building on X-ray crystallography images produced by Rosalind Franklin — is among the most celebrated achievements in the history of science. The structure immediately suggested a mechanism for genetic replication: the two complementary strands could separate and serve as templates for new molecules. Subsequent decades saw the development of recombinant DNA technology, the polymerase chain reaction, and ultimately the sequencing of the human genome — all downstream consequences of understanding DNA's structure. Historians of science have since examined the degree to which Franklin's contributions were acknowledged during her lifetime, finding that recognition was substantially delayed.' The passage's reference to Rosalind Franklin serves primarily to:

Argue that Watson and Crick did not deserve credit for the discovery
Note that the discovery depended on prior work and that proper credit was delayed (Correct answer)
Explain the technical process by which X-ray crystallography reveals molecular structures
Suggest that gender discrimination was the sole reason for delayed scientific recognition

Correct answer: Note that the discovery depended on prior work and that proper credit was delayed

Franklin is mentioned to acknowledge that the discovery 'built on' her work (showing dependence on prior research) and that 'recognition was substantially delayed' (noting credit issues).

B captures both functions of the Franklin reference: (1) her work contributed to the discovery, and (2) recognition was delayed. A overstates — the passage doesn't argue Watson and Crick were undeserving. C is not explained in the passage — X-ray crystallography's mechanism is not described. D overstates — the passage notes delayed recognition but doesn't call discrimination the 'sole' reason.

Question 33: Passage: 'Market concentration in the technology sector has intensified scrutiny from competition regulators in the United States and Europe. Critics argue that a small number of dominant platforms — search engines, social networks, and app stores — create winner-take-all dynamics that disadvantage smaller competitors. These platforms benefit from network effects: the more users join, the more valuable the service becomes, creating self-reinforcing dominance. Defenders contend that scale enables the investment necessary to build reliable infrastructure and fund innovation that smaller firms could not undertake. Regulators face the challenge of distinguishing between dominance achieved through superior products and dominance maintained through exclusionary practices.' According to the passage, 'network effects' contribute to platform dominance because:

Platforms can use profits from dominant markets to subsidize entry into new markets
Each additional user increases the platform's value, making it harder for smaller platforms to compete (Correct answer)
Dominant platforms invest more in research and development than smaller competitors
Users are legally prevented from switching to competing platforms once they join

Correct answer: Each additional user increases the platform's value, making it harder for smaller platforms to compete

The passage defines network effects as: 'the more users join, the more valuable the service becomes, creating self-reinforcing dominance' — each added user makes the platform more attractive, compounding the lead over smaller rivals.

B directly paraphrases the passage's explanation: user growth increases value, which attracts more users, reinforcing dominance. A describes cross-subsidy strategies, not network effects. C describes investment advantages cited by defenders of scale, not network effects. D is false — the passage describes voluntary network effects, not legal locks.

Question 34: Passage: 'Market concentration in the technology sector has intensified scrutiny from competition regulators in the United States and Europe. Critics argue that a small number of dominant platforms — search engines, social networks, and app stores — create winner-take-all dynamics that disadvantage smaller competitors. These platforms benefit from network effects: the more users join, the more valuable the service becomes, creating self-reinforcing dominance. Defenders contend that scale enables the investment necessary to build reliable infrastructure and fund innovation that smaller firms could not undertake. Regulators face the challenge of distinguishing between dominance achieved through superior products and dominance maintained through exclusionary practices.' The regulatory challenge described at the end of the passage is best characterized as:

Determining the appropriate fine to impose on dominant technology platforms
Distinguishing legitimate competitive success from anticompetitive conduct that suppresses rivals (Correct answer)
Coordinating regulatory standards between the United States and European Union
Deciding whether network effects should be treated as a form of illegal monopolization

Correct answer: Distinguishing legitimate competitive success from anticompetitive conduct that suppresses rivals

The passage ends by noting regulators must distinguish 'dominance achieved through superior products' (legitimate) from 'dominance maintained through exclusionary practices' (anticompetitive). This is B.

B directly restates the passage's final sentence. A is about remedy, not the challenge described. C is about international coordination, not mentioned. D overstates — the passage doesn't call network effects illegal monopolization.

Question 35: Passage: 'Epigenetics — the study of heritable changes in gene expression that do not involve alterations to the DNA sequence itself — has complicated the once-dominant view that inheritance is determined solely by the DNA sequence passed from parent to offspring. Environmental factors such as diet, stress, and toxin exposure can modify how genes are expressed without changing the underlying genetic code, and some of these modifications appear to be heritable across generations. This raises profound questions about the boundary between nature and nurture: if environmental experiences can alter gene expression in ways that persist across generations, then the distinction between genetic and environmental inheritance becomes less clear. Critics caution that many epigenetic effects are reversed within a few generations and that the degree of cross-generational transmission in humans remains contested.' The main conceptual implication of epigenetics discussed in the passage is that:

DNA sequencing is no longer a reliable method for predicting inherited traits
The traditional boundary between genetic and environmental inheritance may be less distinct than assumed (Correct answer)
Environmental factors are more important than genetics in determining human health outcomes
Epigenetic changes are permanent and irreversible once they occur

Correct answer: The traditional boundary between genetic and environmental inheritance may be less distinct than assumed

The passage argues epigenetics 'raises profound questions about the boundary between nature and nurture,' suggesting that the genetic/environmental distinction is less clean than previously thought.

B captures the core implication: if environmental factors produce heritable gene expression changes, then the nature-nurture boundary blurs. A is not stated — DNA sequencing's reliability is not discussed. C overstates — the passage doesn't rank genetics vs. environment. D is contradicted by the critics' note that 'many epigenetic effects are reversed within a few generations.'

Question 36: Passage: 'Epigenetics — the study of heritable changes in gene expression that do not involve alterations to the DNA sequence itself — has complicated the once-dominant view that inheritance is determined solely by the DNA sequence passed from parent to offspring. Environmental factors such as diet, stress, and toxin exposure can modify how genes are expressed without changing the underlying genetic code, and some of these modifications appear to be heritable across generations. This raises profound questions about the boundary between nature and nurture: if environmental experiences can alter gene expression in ways that persist across generations, then the distinction between genetic and environmental inheritance becomes less clear. Critics caution that many epigenetic effects are reversed within a few generations and that the degree of cross-generational transmission in humans remains contested.' Critics of epigenetic inheritance research, as described in the passage, primarily argue that:

Epigenetic changes are caused exclusively by diet rather than stress or toxin exposure
The extent of multi-generational inheritance in humans is uncertain and many effects may not persist (Correct answer)
Environmental factors cannot produce changes in gene expression without altering DNA sequences
Epigenetics refutes the possibility that inherited diseases have a genetic basis

Correct answer: The extent of multi-generational inheritance in humans is uncertain and many effects may not persist

Critics caution that epigenetic effects 'are reversed within a few generations' and that 'the degree of cross-generational transmission in humans remains contested' — questioning durability and extent of inheritance.

B directly reflects the two critiques: effects may reverse within generations, and human cross-generational transmission is contested. A misrepresents the passage — diet is one of three factors listed. C contradicts the premise of epigenetics as described. D makes a claim about genetic disease not mentioned in the passage.

GMAT Verbal: Reading Comprehension Main Idea and Detail 1

Passage: 'The decline of bee populations worldwide has alarmed ecologists and agricultural scientists alike.
Bees pollinate roughly one-third of the food crops humans consume, and their disappearance would cascade through food chains in unpredictable ways.
Habitat loss, pesticide exposure, and the spread of parasitic mites have each been implicated, though researchers debate which factor is most significant.
Some evidence suggests that neonicotinoid pesticides disrupt bees' navigational abilities, preventing them from returning to their hives.'
The primary purpose of this passage is to:

🃏 GMAT Flashcards — Study This Quiz as Flip Cards →

📚 Want to go deeper? Read the Full GMAT Study Guide →

What Practice Test Geeks adds beyond an AI chat for GMAT

An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:

A timed, full-length GMAT mock exam — 64 questions in 135 minutes with a 72% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
A fixed GMAT question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
A printable GMAT cheat sheet you can print or save as a PDF.
GMAT flashcards built from the same question bank.