Logical ReasoningDifficulty: Easy

PT110 S3 Q3 Explanation

Sigatoka disease drastically reduces the

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

TopicsNecessary Assumption

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Stimulus

Sigatoka disease drastically reduces the yield of banana trees and is endemic throughout the areas of the world where bananas are grown. The fungus that causes the disease can be controlled with fungicides, but the fungicides can pose a health hazard to people living nearby. The fungicides are thus unsuitable for small Therefore, most of the world’s banana crop is not seriously threatened by Sigatoka disease.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

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

The question
3.

Which one of the following is an assumption on which the

Answer choices

  1. Trap1% picked this

    It will eventually be possible to breed strains of bananas that are resistant

  2. Correct89% picked this

    Large plantations produce most or all of the

    Why this is right

    Answer B is correct.

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

  3. Trap4% picked this

    Sigatoka disease spreads more slowly on large plantations than in small

  4. Trap2% picked this

    Sigatoka disease is the only disease that threatens bananas on a

  5. Trap3% picked this

    Most of the banana trees that have not been exposed to the Sigatoka fungus grow

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