Logical ReasoningDifficulty: Medium

PT106 S2 Q23 Explanation

Garbage dumps do not harm wildlife.

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

TopicsWeaken

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Stimulus

Garbage dumps do not harm wildlife. Evidence is furnished by the Masai-Mara reserve in Kenya, where baboons that use the garbage dumps on the reserve as a food source mature faster and have more reserve that do not scavenge on garbage.

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
23.

Each of the following statements, if true, casts doubt on the

Answer choices

  1. Weakens16% picked this

    The baboons that feed on the garbage dump are of a different species from those

    If the baboons that feed on the garbage dump are of a different species from those that do not, it undermines the comparison made in the evidence between the two groups of baboons, suggesting that any observed differences may be inherent species differences rather than effects of garbage feeding.

  2. Weakens3% picked this

    The life expectancy of baboons that eat garbage is significantly lower than that of baboons that

    A lower life expectancy for garbage-eating baboons suggests that although they mature faster and have more offspring, the overall long-term impact on their health is negative, indicating harm from garbage dumps.

  3. Weakens1% picked this

    The cholesterol level of garbage-eating baboons is dangerously higher than that of baboons that do

    A dangerously higher cholesterol level in garbage-eating baboons implies a health risk associated with eating garbage, thereby indicating potential harm to wildlife.

  4. Correct75% picked this

    The population of hyenas that live near unregulated garbage landfills north of the reserve has doubled in

    Why this is right

    This more or less corroborates the evidence the author presented. "It's not just baboons. Hyenas are also 'thriving' near garbage. Their population has doubled!" If anything, this strengthens.

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

  5. Weakens4% picked this

    The rate of birth defects for the baboon population on the reserve has doubled since the

    If the rate of birth defects for the baboon population has doubled since landfills opened, it directly suggests that the introduction of garbage dumps has had a harmful impact on the overall health of the baboon population.

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