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# A recent experiment has revealed that people who successfully

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Tuck School Moderator
Status: Valar Dohaeris
Joined: 31 Aug 2016
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GMAT 1: 700 Q49 V37
A recent experiment has revealed that people who successfully  [#permalink]

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10 Sep 2018, 08:25
00:00

Difficulty:

15% (low)

Question Stats:

88% (01:43) correct 12% (01:23) wrong based on 50 sessions

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A recent experiment has revealed that people who successfully completed a 7-day MG diet plan in which they controlled their intake of foods high in salt and sugar were found to be healthier on average than the people who discontinued the diet halfway and returned to their old food habits. Clearly, the controlled food intake made the people who successfully completed the plan healthy.

Which of the following, if true, most seriously undermines the argument?

A. The experiment evaluated the physical health of the people but not their mental health.

B. People who followed the diet plan avoided taking any vitamin supplements for boosting their health during the experiment.

C. It was found that those who did not complete the diet plan had a higher metabolism rate than those who did.

D. People who completed the plan were measured to have the same level of health that they had before the experiment.

E. At the beginning of the experiment, everyone was given the same list of foods to avoid.

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Status: Preparing for GMAT
Joined: 25 Nov 2015
Posts: 1043
Location: India
GPA: 3.64
A recent experiment has revealed that people who successfully  [#permalink]

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10 Sep 2018, 10:21
1
Conclusion - the controlled food intake made the people who successfully completed the plan healthy.

Pre-thinking - If the people who completed the plan were already healthier than those who did not.

A. The experiment evaluated the physical health of the people but not their mental health. - Irrelevant

B. People who followed the diet plan avoided taking any vitamin supplements for boosting their health during the experiment. - Irrelevant

C. It was found that those who did not complete the diet plan had a higher metabolism rate than those who did. - Irrelevant

D. People who completed the plan were measured to have the same level of health that they had before the experiment. - Weakens. CORRECT.

E. At the beginning of the experiment, everyone was given the same list of foods to avoid. - Irrelevant

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A recent experiment has revealed that people who successfully   [#permalink] 10 Sep 2018, 10:21
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