Logical ReasoningDifficulty: Medium

PT106 S3 Q8 Explanation

Some environmentalists question

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

TopicsMust be True

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Stimulus

Some environmentalists question the prudence of exploiting features of the environment, arguing that there are no economic benefits to be gained from forests, mountains, or wetlands that no longer exist. Many environmentalists claim that because nature has intrinsic value it would be wrong to destroy such features of the were outweighed by the economic costs of not doing so.

What this question is testing

Must be True

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

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

The question
8.

Which one of the following can be logically inferred from

Answer choices

  1. Opinion vs. Fact5% picked this

    It is economically imprudent to exploit features of

    The environmentalists in the first sentence ("some" = at least one) believe this answer, but can we logically infer that it's true just because some people believe it? Many people believe that the Earth is flat.

  2. Correct67% picked this

    Some environmentalists appeal to a noneconomic justification in questioning the defensibility of exploiting features

    Why this is right

    This is provable because of the 2nd sentence. The environmentalists in the second sentence are saying that nature has intrinsic value. Economic value is not the same as intrinsic value. Intrinsic value isn't based on whether or not you could make money off something. And they are saying, "Because of the intrinsic value of nature, it would be wrong to destroy (via exploitation) features of the environment (such as forests, mountains wetlands), even if destroying them was economically better than not destroying them." The "because" shows that the environmentalist is offering a justification for avoiding the exploitation of the environment. And the "intrinsic value" + "even when it's not in your economic interests" shows that it's a noneconomic way

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

  3. Too Strong: most3% picked this

    Most environmentalists appeal to economic reasons in questioning the defensibility of exploiting features

    We can never infer a claim about "Most X's" unless we were given information about "Most X's". Neither of these two statements told us anything that is true of most environmentalists (more than 50%). We heard what's true of some (at least one), in the 1st sentence. And we heard what's true of many (at least a handful), in the 2nd sentence.

  4. Too Strong: only7% picked this

    Many environmentalists provide only a noneconomic justification in questioning the defensibility of exploiting features

    We know that the "many environmentalists" in the 2nd sentence provide a noneconomic justification for questioning whether it's smart for us to exploit features of the environment. Do we know that this is the only justification they ever provide? No, the passage doesn't reveal whether this is their only justification. The environmentalists in the 2nd sentence could agree with the 1st sentence, that there's also an economic justification for opposing exploitation of the environment.

  5. Opinion vs. Fact18% picked this

    Even if there is no economic reason for protecting the environment, there is a sound noneconomic

    The environmentalists in the second sentence believe this answer, but can we logically infer that it's true? Many people believe that the Earth is flat. Opinion ? Fact.

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