How will the right answer fit in terms of support and conclusion?

Only the right answer will be a conclusion supported by the passage.

Highlight the main conclusion in the passage, if there is one:

Greatly exceeding the recommended daily intake of vitamins A and D is dangerous

[CONCLUSION], for [SUPPORT]. [SUPPORT]. But [SUPPORT].

Technically the first statement is a conclusion, since there’s support given for it. But you’re more concerned with the conclusion in the right answer. Focus on eliminating answers that bring in something new or use stronger wording than the passage uses.

Map the wording of the answers to the wording of the passage:

(A) …are aware of the recommended daily intake…

The passage only says people “overestimate” serving sizes. There’s no info about why they do that, and the author never mentions what anyone is “aware of”. This isn’t supported by the passage.

(B) Some people…exceed the recommended daily intake…

This sticks only to wording that was used in the passage, and it only says “some” people. You love that. If people are eating “two to three times” the standard serving size, and those servings already have “100 percent of the recommended daily intake”, then this would pretty much have to be true.

(C) Some people mistakenly believe it is healthy…

Stop. The author doesn’t say or imply anything about what people “believe” is healthy. Just because they overestimate serving sizes doesn’t mean it has anything to do with their beliefs about health. There’s no support for this in the passage.

(D) …should not take any vitamin supplements.

Careful. There’s no mention of supplements anywhere. The passage is only about “vitamin-fortified foods”.

(E) Manufacturers are unaware…

“Manufacturers” were never mentioned. So no way you have support for a conclusion about what they’re aware or “unaware” of.

(B) is the correct answer.