Which of the following can be most reasonably inferred from the passage?

. The passage repeatedly argues that aphids succeed through adaptation, reproduction and ecological cooperation rather than strength or intelligence. The concluding paragraph explicitly broadens this into a general evolutionary principle. “Survival in nature rarely belongs to the loudest or most visually impressive species.” So B is correct. A is tempting because the passage discusses pesticides killing beneficial insects. However, the author never says predator elimination is the primary reason for aphid survival. C overstates the relationship. Aphids benefit from ants, but the passage never claims they are incapable of surviving independently. D confuses continuation with amplification. Industrial agriculture worsens infestations, but aphids existed long before modern farming.

The author’s discussion of monoculture farming primarily serves to:

. The monoculture discussion supports the broader argument that human agricultural systems can create conditions favorable to pests. “Industrial farming unintentionally creates ideal conditions for infestation.” The focus is on amplified vulnerability, not outright condemnation. So A is correct. B is extreme. The passage advocates integrated pest management, not total abandonment of pesticides. C exaggerates the claim. Aphids are described as economically destructive, but not the “single greatest threat.” D sounds sophisticated but misses the author’s primary intention. The comparison exists, but only to reinforce the argument about vulnerability.

Which of the following, if true, would most weaken the author’s broader philosophical conclusion about survival?

. The author’s philosophical conclusion suggests that survival depends more on adaptability and systems than on dominance or spectacle. If apex predators survived without significant adaptation, the author’s broader principle becomes less universally convincing. So B is correct. A is irrelevant to the larger philosophical claim. C weakens one ecological detail but not the broader thesis about adaptation. D concerns agricultural management rather than evolutionary survival.

The passage most strongly suggests that Rachel Carson is invoked in order to:

. Rachel Carson is referenced to reinforce the idea that ecological imbalance caused by excessive chemical dependence was recognized decades earlier. Her inclusion strengthens the intellectual continuity of the argument. So, A is correct. B introduces moral judgment that the passage avoids. C is too absolute. The passage never says pesticide use inevitably worsens productivity. D overstates Carson’s role and misrepresents the author’s purpose. The passage is not discussing the origins of ecology as a discipline.

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Fragility as Strategy: How Aphids Master Systemic Survival

Fragility as Strategy: How Aphids Master Systemic Survival

Beyond their fragility, aphids use asexual reproduction and ant-cooperation to turn individual weakness into a systemic, invincible survival strategy.

Aphids are among the most successful insects on Earth despite appearing almost absurdly fragile. Soft-bodied and barely a few millimeters long, they spend most of their lives attached to stems and leaves, feeding on plant sap. Yet agricultural scientists estimate that aphids damage billions of dollars worth of crops each year. Wheat, cotton, potatoes and soybean plants all remain vulnerable to infestations that often begin invisibly. A farmer may notice only a slight curling of leaves at first. Days later,…

RC Questions

Each essay includes four exam-level RC questions for CAT, GMAT, GRE, XAT and IPMAT.

Which of the following can be most reasonably inferred from the passage?
The passage repeatedly argues that aphids succeed through adaptation, reproduction and ecological cooperation rather than strength or intelligence. The concluding paragraph explicitly broadens this into a general evolutionary principle. “Survival in nature rarely belongs to the loudest or most visually impressive species.” So B is correct. A is tempting because the passage discusses pesticides killing beneficial insects. However, the author never says predator elimination is the primary reason for aphid survival. C overstates the relationship. Aphids benefit from ants, but the passage never claims they are incapable of surviving independently. D confuses continuation with amplification. Industrial agriculture worsens infestations, but aphids existed long before modern farming.
The author’s discussion of monoculture farming primarily serves to:
The monoculture discussion supports the broader argument that human agricultural systems can create conditions favorable to pests. “Industrial farming unintentionally creates ideal conditions for infestation.” The focus is on amplified vulnerability, not outright condemnation. So A is correct. B is extreme. The passage advocates integrated pest management, not total abandonment of pesticides. C exaggerates the claim. Aphids are described as economically destructive, but not the “single greatest threat.” D sounds sophisticated but misses the author’s primary intention. The comparison exists, but only to reinforce the argument about vulnerability.
Which of the following, if true, would most weaken the author’s broader philosophical conclusion about survival?
The author’s philosophical conclusion suggests that survival depends more on adaptability and systems than on dominance or spectacle. If apex predators survived without significant adaptation, the author’s broader principle becomes less universally convincing. So B is correct. A is irrelevant to the larger philosophical claim. C weakens one ecological detail but not the broader thesis about adaptation. D concerns agricultural management rather than evolutionary survival.
The passage most strongly suggests that Rachel Carson is invoked in order to:
Rachel Carson is referenced to reinforce the idea that ecological imbalance caused by excessive chemical dependence was recognized decades earlier. Her inclusion strengthens the intellectual continuity of the argument. So, A is correct. B introduces moral judgment that the passage avoids. C is too absolute. The passage never says pesticide use inevitably worsens productivity. D overstates Carson’s role and misrepresents the author’s purpose. The passage is not discussing the origins of ecology as a discipline.

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Fragility as Strategy: How Aphids Master Systemic Survival