December 2013 LSAT Section 1 Question 15

Greatly exceeding the recommended daily intake of vitamins A and D is dangerous, for they can be toxic at high levels...

AndrewArabie on May 18 at 11:14PM

B vs D

The reason I ruled out D is because the (D) says "People who eat vitamin fortified foods should not take vitamin supplements" to which I could respond "sure, if those vitamins are A or D and if the food is fortified with A or D" so it doesn't have to be true. On the same token I could respond to B with "sure, if the foods were fortified with A or D, and if they took a vitamin A or D supplement." Both of those answer choices depend on the user taking an A or D, and the fortified foods being fortified with A or D so I don't see how one answer choice is any better than the other

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AndrewArabie on May 18 at 11:27PM

I guess "these vitamins" in the stimulus refers specifically to vitamins A and D and not just generic vitamins in the fortified food.

Emil-Kunkin on May 20 at 08:10PM

Hi, I think the key difference here is the most Vs the some. B tells us that some people have more than recommended. While that still does depend on the assumption that the fortified foods are fortified with A and D, the passage does explicitly tell us that some people eat more than the recommended serving of fortified foods.

However, we have no clue how many people do this. It might be a small minority. For D to be correct, it would need to be more than half. D also suffers from the issue of "any supplement." Perhaps people are getting too much A and D from fortified foods, but still need supplements for vitamin C?