Kaplan CAT. Help

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Kaplan CAT. Help

by bryan88 » Fri Apr 20, 2012 7:36 am
Statistics show that although consumption of low-calorie, alternative sweeteners has gone up in each of the past five years, so has the percentage of the population that is obese. According to sugar manufacturers, this shows that the low-calorie, alternative sweeteners are not effective weight loss aids.

Which of the following assertions, if true, would most weaken the sugar manufacturers' conclusion?

A)Many people who use low-calorie, alternative sweeteners eat some foods that are not low-calorie.
B)Some low-calorie, alternative sweeteners can increase the appetite, making a person eat more than he or she normally would.
C)Many people use low-calorie, alternative sweeteners to accompany a well-balanced, low-calorie diet.
D)Obesity has declined among people who have consistently used low-calorie, alternative sweeteners.
E)The rise in the consumption of low-calorie, alternative sweeteners is primarily due to an increase in the number of users rather than an increase in the amount each user consumes.
Source: — Critical Reasoning |

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by GMAT Kolaveri » Fri Apr 20, 2012 9:26 am
OA : D
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by bryan88 » Fri Apr 20, 2012 10:03 am
I know the OA.
Wanted a discussion as to why A is wrong
GMAT Kolaveri wrote:OA : D

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by GMAT Kolaveri » Fri Apr 20, 2012 6:47 pm
bryan88 wrote:I know the OA.
Wanted a discussion as to why A is wrong
GMAT Kolaveri wrote:OA : D
Its simple. Conclusion is low-calorie, alternative sweeteners are not effective weight loss aids.
To weaken this conclusion our OA should say that low-calorie, alternative sweeteners ARE effective weight loss aids.

A)Many people who use low-calorie, alternative sweeteners eat some foods that are not low-calorie. This option in a way strengthens the conclusion.
B)Some low-calorie, alternative sweeteners can increase the appetite, making a person eat more than he or she normally would. This strengthens the conclusion.
C)Many people use low-calorie, alternative sweeteners to accompany a well-balanced, low-calorie diet. This is not relevant.
D)Obesity has declined among people who have consistently used low-calorie, alternative sweeteners. This option weakens by saying that low-calorie, alternative sweeteners are effective.
E)The rise in the consumption of low-calorie, alternative sweeteners is primarily due to an increase in the number of users rather than an increase in the amount each user consumes.This is not related t o the conclusion.
[/b]
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by ice_rush » Sun Apr 22, 2012 5:09 pm
The problem with choice A is the word "many". "Many" could mean 2 or 1000 or a million people..who knows. Besides, it is safe to assume that pretty much everyone eats some foods that are NOT low calorie. (A) does not affect the argument in anyway.

Hope this helps!