LSAT 21, Logical Reasoning I, Q3, LSATHacks

LR Question 3 Explanation, by LSATHacks

QUESTION TEXT: A new medication for migraine seems effective, but there is concern…

QUESTION TYPE: Necessary Assumption

CONCLUSION: There’s no reason to worry about side effects of the new migraine drug.

REASONING: The drug doesn’t cause side effects if you take it under close medical supervision.

ANALYSIS: How many drugs do people take under close medical supervision? Not many. So this drug could still cause many side effects for the people who don’t take it while a doctor is watching.

All of the wrong answers ignore the conclusion, which is about whether the drug has side effects for those with heart disease.

___________

1. The conclusion wasn’t about whether the drug worked. It was only about whether it had side effects.
2. CORRECT. If some migraine sufferers take the drug without medical supervision then we might have to worry about side effects.
3. It doesn’t matter how many people had heart disease. It only matters whether those with heart disease suffered side effects.
4. The conclusion is only about the side effects for those with heart disease. Other side effects are irrelevant.
5. Other medications don’t matter. It only matters whether this medication has side effects for heart disease sufferers.

Recap: The question begins with “A new medication for migraine seems effective, but there is concern”. It is a Necessary Assumption question. Learn how to master LSAT Necessary questions on the LSAT Logical Reasoning question types page.

Hi, I'm Graeme Blake

Founder of LSAThacks; I scored a 177 on the LSAT.

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