Logical ReasoningDifficulty: Easy

PT124 S2 Q1 Explanation

The water of Lake Laberge,

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

TopicsParadox

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Stimulus

The water of Lake Laberge, in Canada, currently contains high levels of the pesticide toxaphene. Authorities are puzzled because toxaphene was banned in North America in the early 1980s and now other parts of the world.

What this question is testing

Paradox

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
1.

Which one of the following, if true, does most to explain why the water of Lake Laberge currently contains

Answer choices

  1. Correct98% picked this

    Levels of pesticides in the environment often continue to be high for decades after

    Why this is right

    Answer A is correct.

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

  2. Trap0% picked this

    Lake Laberge’s water contains high levels of other pesticides

  3. Trap0% picked this

    Toxic chemicals usually do not travel large distances in

  4. Trap1% picked this

    North American manufacturers opposed banning

  5. Trap1% picked this

    Toxic chemicals become more readily detectable once they enter organisms the

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