Logical ReasoningDifficulty: Easy

PT129 S2 Q1 Explanation

Many doctors cater to patients'

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

TopicsPrinciple-Conform

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Stimulus

Many doctors cater to patients' demands that they be prescribed antibiotics for their colds. However, colds are caused by viruses, and antibiotics have no effect on viruses, and so antibiotics have no effect on colds. Such treatments are also problematic because doctors should never prescribe antibiotics to treat colds.

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
1.

The reasoning above most closely conforms to which one of the

Answer choices

  1. Correct92% picked this

    A doctor should not prescribe a drug for a condition if it cannot improve that condition and if the drug

    Why this is right

    This builds a bridge from being ~E + D → ~P ineffective and possibly having dangerous side effects to the recommendation that doctors not prescribe antibiotics to treat colds.

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

  2. Wrong Trigger2% picked this

    A doctor should not prescribe any drug that might have harmful effects on the patient even if the drug might have a

    The reasoning does not include the possibility that antibiotics could have a positive effect on someone with a cold.

  3. Negation1% picked this

    A doctor should attempt to prescribe every drug that is likely to affect the

    This connects affecting health ~D → P positively with prescribing antibiotics. This negates the logic of the underlying principle in the reasoning.

  4. Wrong Trigger2% picked this

    A doctor should withhold treatment from a patient if the doctor is uncertain whether the treatment

    The trigger in this relationship is the doctor being uncertain whether the treatment will benefit the patient, which is not included in the reasoning.

  5. Wrong Trigger4% picked this

    A doctor should never base the decision to prescribe a certain medication for a patient on the patient's claims about

    The patient’s claims about the effectiveness of antibiotics are not discussed in the reasoning.

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