Logical ReasoningDifficulty: Easy

PT109 S3 Q10 Explanation

The importance of the ozone

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

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Stimulus

The importance of the ozone layer to terrestrial animals is that it entirely filters out some wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given to severe eye damage for animals of many species.

What this question is testing

Most Supported

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
10.

Which one of the following is most strongly supported by the statements above, if

Answer choices

  1. Trap3% picked this

    All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer,

    Too Strong: all

  2. Too Strong: few3% picked this

    Few species of animals live on a part of the earth’s surface that is not threatened by holes

    This says that most species live in areas that are threatened by holes in the ozone layer. The statements never tell us anything that is true of most species.

  3. Trap5% picked this

    Some species of animals have eyes that will not suffer any damage when exposed

    Too Strong / Out of Scope: won't suffer any We only heard about animals who are vulnerable to severe eye damage. We have no information about animals who aren't.

  4. Too Strong: single / most5% picked this

    A single wavelength of sunlight can cause severe damage to the eyes of most

    We didn't receive any fact that is true for most species.

  5. Correct84% picked this

    Some wavelengths of sunlight that cause eye damage are more likely to reach the earth’s surface where there are holes in the ozone

    Why this is right

    Answer E is correct.

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

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