Logical ReasoningDifficulty: Easy

PT135 S2 Q11 Explanation

Spreading iron particles over

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

TopicsPrinciple-Conform

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Stimulus

Spreading iron particles over the surface of the earth's oceans would lead to an increase in phytoplankton, decreasing the amount of carbon dioxide in the atmosphere and thereby counteracting the greenhouse effect. But while counteracting the greenhouse effect is important, the side effects of an iron-seeding strategy have yet to be studied. response to the greenhouse effect should not be implemented immediately.

What this question is testing

Principle-Conform

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
11.

The reasoning above most closely conforms to which one of the

Answer choices

  1. Negation7% picked this

    A problem-solving strategy should be implemented if the side effects of the

    This negates the reasoning in the SSE → IS argument.

  2. Correct85% picked this

    Implementing a problem-solving strategy that alters an important resource is impermissible if the consequences are

    Why this is right

    This restates the assumption in ~SSE → ~IS contrapositive form.

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

  3. Wrong Evidence1% picked this

    We should not implement a problem-solving strategy if the consequences of doing so are more serious

    The argument does not establish ~CMS → IS whether the consequences of implementing an iron-seeding strategy are more serious than the greenhouse effect.

  4. Wrong Evidence3% picked this

    We should not implement a problem-solving strategy if that strategy requires altering

    While the iron-seeding strategy AIR → ~IS does require altering an important resource, the argument’s evidence is about the unknown side-effects, so to match the reasoning the principle should build on the unknown side-effects.

  5. Wrong Evidence3% picked this

    As long as there is a possibility that a strategy for solving a problem may instead exacerbate that problem, such a

    The argument states that ~SMW → IS iron-seeding would counteract the greenhouse gas effect. The argument’s evidence was that there are unknown side-effects and does not suggest that the strategy could make the greenhouse effect worse.

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