Dermatologists now believe that potassium intake can lead to a better

Question

Dermatologists now believe that potassium intake can lead to a better facial complexion. They base this conclusion on a recent study in which subjects who ate a banana, a major source of potassium, with breakfast each morning had fewer acne-related facial blemishes than subjects who did not eat a banana with breakfast each morning.

Which of the following, if true, provides the most additional support for the conclusion?
A. None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis. 
B. Eating patterns after breakfast will have a greater effect on acne levels. 
C. The researchers who conducted the study plan to verify the results by conducting two similar studies in the future. 
D. The intake of vitamin C and fiber, the other major elements found in bananas, has been shown to have no correlation with facial complexion. 
E. Facial washing is an alternative approach to acne treatment.

Adelajne · Answer

A. None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis.  CORRECT , so both subjects were measured/experimented on the same basis, so banana has given this effect.

B. Eating patterns after breakfast will have a greater effect on acne levels. Doesn't explain why banana cures acne.

C. The researchers who conducted the study plan to verify the results by conducting two similar studies in the future. weakens it

D. The intake  of vitamin C and fiber,  the other major elements found in bananas, has been shown to have no correlation with facial complexion. out of scope vitamin c and fiber

E. Facial washing is an alternative approach to acne treatment. out of scope

Showmeyaa · Answer

Dermatologists now believe that potassium intake can lead to a better facial complexion. They base this conclusion on a recent study in which subjects who ate a banana, a major source of potassium, with breakfast each morning had fewer acne-related facial blemishes than subjects who did not eat a banana with breakfast each morning.

Which of the following, if true, provides the most additional support for the conclusion?
A. None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis.-Irrelevant
B. Eating patterns after breakfast will have a greater effect on acne levels.- We are not concerned about what happens post breakfast.
C. The researchers who conducted the study plan to verify the results by conducting two similar studies in the future. - It rather weakens the argument by saying that the researchers plan to verify the results.
D. The intake of vitamin C and fiber, the other major elements found in bananas, has been shown to have no correlation with facial complexion.- Correct
E. Facial washing is an alternative approach to acne treatment.-Irrelevant.

AnirudhChalla · Answer

A. None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis.
B. Eating patterns after breakfast will have a greater effect on acne levels.
C. The researchers who conducted the study plan to verify the results by conducting two similar studies in the future.
D. The intake of vitamin C and fiber, the other major elements found in bananas, has been shown to have no correlation with facial complexion. CORRECT. By ruling out other possibilities, this option confirms that it is indeed potassium that is causing the good effect.
E. Facial washing is an alternative approach to acne treatment.

GMAT0010 · Answer

Why D and not A? Isn't A giving support? If no one used this method before and if this method brings results then ?

GMATNinja , nightblade354 Please help!

AnirudhChalla · Answer

The assumption is that potassium causes the good effect. Not the consumption of Banana. Option A deals with Bananas not Potassium

Posted from my mobile device

globaldesi · Answer

Official Explanation:

(D) This is a Strengthen question.

The conclusion is that potassium intake can lead to a better facial complexion. (This is based on an observed correlation between eating bananas and a decrease in facial blemishes, but it is important to understand that the conclusion is not that eating bananas is good for the complexion.)

Choice (D) strengthens this conclusion by eliminating the other main nutrients found in bananas, leaving potassium as the nutrient that affects facial complexion.

Providing an alternative method of improving complexion, as given with choice (E), does not affect the stated conclusion either way.

Choice (A) is irrelevant to the study indicators.

Choice (B) indicates that breakfast is not the most important factor in acne control, but it neither confirms nor denies the conclusion about potassium specifically.

Choice (C) is wrong because a plan to do something in the future says nothing about the current study and conclusions drawn from it.

Choice (D) is the correct answer.

Taulark1 · Answer

option A is wrong because for it to be true we have to assume that if one stops eating banana's the effect will still be there

snehaamishraa · Answer

I am not able to find a good and reasonable explanation for this question. kindly explain it in a specified manner!

Taulark1 · Answer

option A is wrong because it says - None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis.

okay so did they eat bananas at lunch? dinner? brunch? yum yum
okay they didn't eat regularly , what about irregularly ?

takeaway - when down to 2 options , always read every word carefully and try to make sense of it

Isha2701 · Answer

Bunuel , confused between A and D, still chose A? Why is it wrong?

guddo · Answer

Dermatologists now believe that potassium intake can lead to a better facial complexion. They base this conclusion on a recent study in which subjects who ate a banana, a major source of potassium, with breakfast each morning had fewer acne-related facial blemishes than subjects who did not eat a banana with breakfast each morning. 
 
Which of the following, if true, provides the most additional support for the conclusion?

The conclusion is that potassium helps improve facial complexion. But the study only shows that people who ate bananas had fewer blemishes. So the key issue is whether  something other than potassium in bananas  could explain the result. The best support will rule out other major banana ingredients.

(A) None of the subjects who refrained from eating bananas with breakfast had previously eaten bananas with breakfast on a regular basis.

This does not help much. It says something about their earlier habits, not about what in bananas caused the difference.

(B) Eating patterns after breakfast will have a greater effect on acne levels.

This weakens the conclusion if anything. It suggests breakfast bananas may not matter much.

(C) The researchers who conducted the study plan to verify the results by conducting two similar studies in the future.

This does not support the conclusion now. A future plan is not evidence.

(D) The intake of vitamin C and fiber, the other major elements found in bananas, has been shown to have no correlation with facial complexion.

This is the best answer.  It strengthens the conclusion by ruling out the main alternative explanations.  If the other major components of bananas are not connected to complexion, then potassium becomes the most likely reason the banana-eating group had fewer blemishes.

(E) Facial washing is an alternative approach to acne treatment.

This is irrelevant. The question is about whether potassium helps, not whether some other treatment exists.

Answer: (D)

Dermatologists now believe that potassium intake can lead to a better

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Dermatologists now believe that potassium intake can lead to a better

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