Logical ReasoningDifficulty: Medium

PT9 S2 Q4 Explanation

Data from satellite photographs

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

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Stimulus

Data from satellite photographs of the tropical rain forest in Melonia show that last year the deforestation rate of this environmentally sensitive zone was significantly lower than in previous years. The Melonian government, which spent millions of dollars last year to enforce laws against burning and cutting of the its increased efforts to halt the destruction are proving effective.

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
4.

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

Answer choices

  1. No Impact1% picked this

    Landowner opposition to the government’s antideforestation efforts grew more violent last year in response to

    The violent opposition from landowners, while a consequence of increased enforcement, doesn't directly undermine the claim that enforcement was effective in reducing deforestation.

  2. Correct69% picked this

    Rainfall during the usually dry 6-month annual burning season was abnormally

    Why this is right

    If the rainfall during the usual burning season was abnormally heavy, it could serve as an alternate explanation for the reduced deforestation rate. This means that the lower rate could be due to the natural factor of increased rain, which deterred burning, rather than the government's efforts.

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

  3. Opposite (if anything)2% picked this

    Government agents had to issue fines totaling over $9 million to 3,500 violators

    If anything, this seems to boost the plausibility of the idea that the government's efforts are making a difference.

  4. Weaker Impact22% picked this

    The inaccessibility of much of the rain forest has made it impossible to confirm the satellite data by

    This makes the government's evidence a little less robust / trustworthy, but we have no reason to be inherently distrustful of comparing satellite images of the rainforest today to those of the rainforest in the past. Corroborating the satellite data would strengthen the author's case, but a failure to corroborate the data doesn't do much to weaken it. The correct answer's alternate explanation for the observed change is a lot more impactful.

  5. Unclear Impact6% picked this

    Much of the money that was designated last year for forest preservation has been spent on research

    If almost none of the government money was spent on enforcement, then it would undermine the plausibility that the government's efforts to stop deforestation are what caused the lower rate of deforestation. But this doesn't say anything that strong, just that "much" (i.e. a significant chunk) of the money went to research. This doesn't give us much reason to think that enforcement was underfunded.

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