Logical ReasoningDifficulty: Easy

PT129 S2 Q14 Explanation

Scientists have shown that older bees

A free, expert breakdown of this official LSAT Logical Reasoning question.

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Stimulus

Scientists have shown that older bees, which usually forage outside the hive for food, tend to have larger brains than do younger bees, which usually do not forage but instead remain in the hive to tend to newly hatched bees. Since foraging requires greater cognitive ability than does foraging leads to the increased brain size of older bees.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
14.

Which one of the following, if true, most seriously weakens the

Answer choices

  1. Irrelevant Comparison6% picked this

    Bees that have foraged for a long time do not have significantly larger brains than do bees that have

    The degree to which brain sizes are increased is not relevant to the argument.

  2. Out of Scope2% picked this

    The brains of older bees that stop foraging to take on other responsibilities do not become smaller

    What happens to bees after they’ve acquired larger brains is not relevant to the argument.

  3. Too Weak2% picked this

    Those bees that travel a long distance to find food do not have significantly larger brains than do bees that

    This tries to weaken the argument with something that could be misconstrued as an example of the presumed cause without the presumed effect. However, the degree issue here has it wrong. The argument does not suggest that the more foraging a bee does, the larger the bee’s brain will become.

  4. Strengthen1% picked this

    In some species of bees, the brains of older bees are only marginally larger than

    This puts a cap on the difference in brain size, but does support the second premise of the argument.

  5. Correct89% picked this

    The brains of older bees that never learn to forage are the same size as those of their foraging

    Why this is right

    This provides bees with increased brain size that do not forage.

    Skill tested: Weaken · how this choice captures the argument's function is the move to repeat next time.

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