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19 Sep 2020, 12:52
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
65% (01:38) correct
35%
(01:48)
wrong
based on 602
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Nutritionists believe that a person's daily requirement for vitamins can readily be met by eating five servings of fruits and vegetables daily. However, most people eat far less than this. Thus, most people need to take vitamin pills.
Which one of the following statements, if true, most seriously weakens the argument?
A. Even five servings of fruits and vegetables a day is insufficient unless the intake is varied to ensure that different vitamins are consumed.
B. Certain commonly available fruits and vegetables contain considerably more nutrients than others.
C. Nutritionists sometimes disagree on how much of a fruit or vegetable constitutes a complete serving.
D. Many commonly consumed foods that are neither fruits nor vegetables are fortified by manufacturers with the vitamins found in fruits and vegetables.
E. Fruits and vegetables are also important sources of fiber, in forms not found in vitamin pills.
Which one of the following statements, if true, most seriously weakens the argument?
A. Even five servings of fruits and vegetables a day is insufficient unless the intake is varied to ensure that different vitamins are consumed.
B. Certain commonly available fruits and vegetables contain considerably more nutrients than others.
C. Nutritionists sometimes disagree on how much of a fruit or vegetable constitutes a complete serving.
D. Many commonly consumed foods that are neither fruits nor vegetables are fortified by manufacturers with the vitamins found in fruits and vegetables.
E. Fruits and vegetables are also important sources of fiber, in forms not found in vitamin pills.
19 Sep 2020, 20:43
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The conclusion the author’s makes is that MOST ppl need to take vitamins (assuming the vitamin tablets will supplement the rest of the daily vitamin requirement). We need to cast doubt on this claim by finding some info. that shows ppl might not have to take the vitamins.
How does the author arrive at his conclusion?
The author bases his conclusion upon the following facts:
Nutritionists say that 5 servings of fruits/vegetables eaten daily is enough to meet the vitamin requirement.
Then he says because most ppl eat less than this amount of fruits/vegetables, they need vitamin supplementation.
One big leap in logic the author makes is that this group of “most” ppl are not getting any vitamin supplementation elsewhere in their diet. Just because 1 way of getting all the vitamins doesn’t happen, it is not necessarily true that these ppl aren’t getting enough daily vitamins from other sources.
A is wrong because it is attempting to make you question the facts. Whenever a premise is given, we have to take that as definitive fact. Since nutritionists say that 5 servings is enough, that becomes fact in GMAT world.
D fills in the leap in logic. Notice the key word “commonly” eaten foods. If these manufactured foods are “commonly” eaten, then this is enough info. to cast doubt on whether these ppl actually need the vitamin supplements.
D is the correct answer
Posted from my mobile device
How does the author arrive at his conclusion?
The author bases his conclusion upon the following facts:
Nutritionists say that 5 servings of fruits/vegetables eaten daily is enough to meet the vitamin requirement.
Then he says because most ppl eat less than this amount of fruits/vegetables, they need vitamin supplementation.
One big leap in logic the author makes is that this group of “most” ppl are not getting any vitamin supplementation elsewhere in their diet. Just because 1 way of getting all the vitamins doesn’t happen, it is not necessarily true that these ppl aren’t getting enough daily vitamins from other sources.
A is wrong because it is attempting to make you question the facts. Whenever a premise is given, we have to take that as definitive fact. Since nutritionists say that 5 servings is enough, that becomes fact in GMAT world.
D fills in the leap in logic. Notice the key word “commonly” eaten foods. If these manufactured foods are “commonly” eaten, then this is enough info. to cast doubt on whether these ppl actually need the vitamin supplements.
D is the correct answer
Posted from my mobile device
Neha2404
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19 Sep 2020, 21:19
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Weaken. The correct answer choice is (D)
This simple stimulus provides two pieces of basic information (premises), followed by a conclusion:
According to nutritionists, people can meet their daily vitamin needs by eating five servings of fruit
and vegetables per day. Most people eat far less than the required five servings.
Conclusion: Most people need to take vitamin pills.
For some reason, the author assumes that the only alternative to the five recommended servings
would be vitamin pills. Since the question which follows is a Weaken, perhaps we should look
for an answer choice which provides another option that allows people to follow the nutritionists’
recommendation.
Answer choice (A): If even five servings of fruits and vegetables would sometimes be insufficient,
this increases the need for some substitute source of vitamins.
Answer choice (B): The fact that there is a wide variety of vitamin-levels among fruits and
vegetables does not weaken the argument that most people should be taking vitamin pills, since the
problem is that most people eat far less than five servings of fruits and vegetables per day.
Answer choice (C): Even if there is some disagreement as to what constitutes a complete serving,
this does not weaken the simple argument in the stimulus: since most eat far less than the
recommended five servings per day, most should take vitamin pills.
Answer choice (D): This is the correct answer choice, as it provides another possible source of
necessary vitamins, beyond those of fruits, vegetables, and vitamin pills. If many common foods are
vitamin fortified, then this provides another option, weakening the argument that most people need
to take vitamin pills.
Answer choice (E): The argument from the stimulus regards fruits, vegetables, and vitamins.
Even though this choice provides a benefit of food that is unavailable in vitamin pills, fiber is not
mentioned in the stimulus, so this answer choice does not weaken the author’s conclusion.
Posted from my mobile device
This simple stimulus provides two pieces of basic information (premises), followed by a conclusion:
According to nutritionists, people can meet their daily vitamin needs by eating five servings of fruit
and vegetables per day. Most people eat far less than the required five servings.
Conclusion: Most people need to take vitamin pills.
For some reason, the author assumes that the only alternative to the five recommended servings
would be vitamin pills. Since the question which follows is a Weaken, perhaps we should look
for an answer choice which provides another option that allows people to follow the nutritionists’
recommendation.
Answer choice (A): If even five servings of fruits and vegetables would sometimes be insufficient,
this increases the need for some substitute source of vitamins.
Answer choice (B): The fact that there is a wide variety of vitamin-levels among fruits and
vegetables does not weaken the argument that most people should be taking vitamin pills, since the
problem is that most people eat far less than five servings of fruits and vegetables per day.
Answer choice (C): Even if there is some disagreement as to what constitutes a complete serving,
this does not weaken the simple argument in the stimulus: since most eat far less than the
recommended five servings per day, most should take vitamin pills.
Answer choice (D): This is the correct answer choice, as it provides another possible source of
necessary vitamins, beyond those of fruits, vegetables, and vitamin pills. If many common foods are
vitamin fortified, then this provides another option, weakening the argument that most people need
to take vitamin pills.
Answer choice (E): The argument from the stimulus regards fruits, vegetables, and vitamins.
Even though this choice provides a benefit of food that is unavailable in vitamin pills, fiber is not
mentioned in the stimulus, so this answer choice does not weaken the author’s conclusion.
Posted from my mobile device
