LSAT 127 – Section 3 – Question 20

LSAT 127 - Section 3 - Question 20

December 2003

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Question QuickView	Type	Tags	Answer Choices	Curve	Question Difficulty	Psg/Game/S Difficulty	Explanation
PT127 S3 Q20	+LR	Weaken +Weak Causal Reasoning +CausR Link Assumption +LinkA	A 5% 160 B 35% 161 C 3% 160 D 58% 167 E 0% 161	151 161 171	+Hardest	146.462 +SubsectionMedium

Newspaper article: People who take vitamin C supplements tend to be healthier than average. This was shown by a study investigating the relationship between high doses of vitamin C and heart disease, which showed that people who regularly consume high doses of vitamin C supplements have a significantly lower than average risk of heart disease.

Summarize Argument

The author concludes that people who take vitamin C supplements tend to be healthier than average. This is because a study showed that people who regularly consume high doses of vitamin C supplements have a much lower than average risk of heart disease.

Notable Assumptions

The author assumes that taking vitamin C supplements doesn’t cause any harm to overall health that could outweigh the benefits of lower risk of heart disease. (Maybe vitamin C supplements lead to a higher risk of kidney disease? If so, we can’t conclude that people who take vitamin C supplements are healthier than average.)

Vitamin C taken in the form of supplements has a different effect on the body than does vitamin C taken in food.

The conclusion is about vitamin C supplements, and the study is also about vitamin C supplements. Whether vitamin C in food has different effects from vitamin C in supplements doesn’t affect the argument.

The reduction in risk of heart disease due to the consumption of vitamin C is no greater than the reduction due to certain other dietary changes.

The author never suggested eating vitamin C was the best way to reduce heart disease. There can be other dietary changes that reduce heart disease as much or more than vitamin C; this is consistent with the argument.

Taking both vitamin C supplements and vitamin E supplements lowers one’s risk of heart disease far more than does taking either one alone.

We know there’s a correlation between eating high doses of vitamin C supplements and having a lower risk of heart disease. The fact a combination of vitamins might reduce heart disease more doesn’t change the fact that there’s evidence vitamin C reduces heart disease risk.

High doses of vitamin C supplements tend to reduce slightly one’s resistance to certain common infectious diseases.

This points out a harmful effect of vitamin C supplements. This raises the possibility that this harmful effect might outweigh decreased risk of heart disease when it comes evaluating vitamin C supplements’ impact on overall health.

Taking vitamin C supplements has been found to lower one’s risk of developing cancer.

This is an additional benefit of vitamin C supplements. To weaken the argument, we want to point out a harm from vitamin C supplements.

LSAT 127 – Section 3 – Question 20

LSAT 127 - Section 3 - Question 20

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LSAT PrepTest 127 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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