Logical ReasoningDifficulty: Easy

PT106 S2 Q7 Explanation

For every 50 dogs that contract

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

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Stimulus

For every 50 dogs that contract a certain disease, one will die from it. A vaccine exists that is virtually 100 percent effective in preventing this disease. Since the risk of death from complications of vaccination is one death per 5,000 vaccinations, to receive the vaccine than not to receive it.

What this question is testing

Evaluate

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
7.

Which one of the following would it be most helpful to know in order to

Answer choices

  1. Trap3% picked this

    the total number of dogs that die each year from all

  2. Trap1% picked this

    whether the vaccine is effective against the disease in household pets

  3. Trap3% picked this

    the number of dogs that die each year from diseases other than the

  4. Trap2% picked this

    the likelihood that a dog will contract another disease such

  5. Correct92% picked this

    the likelihood that an unvaccinated dog will contract the disease

    Why this is right

    Answer E is correct.

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

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