quitting smoking is very stressful and leads to weight gain

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Because quitting smoking is very stressful and leads to weight gain, it is difficult to do. The key to quitting, however, may be as simple as replacing an unhealthy activity with a healthy one. In one study half of those attempting to quit were assigned to a smoking-cessation program alone, and the other half were assigned to the same program plus fifteen weeks of aerobic exercise. At the one-month mark none in the first group had quit, but 40 percent of those in the second group had not smoked.
Each of the following, if true, provides some support for the argument EXCEPT:
(A) Regular exercise prevents weight gain.
(B) Each group in the study included four hundred randomly selected participants.
(C) Nonsmokers accustomed to regular exercise do not gain weight when they stop exercising.
(D) Aerobic exercise can stimulate the brain's production of endorphins, which reduce tension.
(E) Of those in the second group in the study, 38 percent had not smoked at the one-year mark.

watch it its an except type CR; please explain how the incorrect choices are strengthening the argument
Many of the great achievements of the world were accomplished by tired and discouraged men who kept on working
Source: — Critical Reasoning |

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by amitverma22 » Mon May 10, 2010 1:48 am
The Argument is : The key to quitting, however, may be as simple as replacing an unhealthy activity with a healthy one which means that the group doing cessation-program and exercise is more likely to quit than group doing only program.
Doing exercise helps in quitting smoking.

(A) Regular exercise prevents weight gain. And we know from passage that weight gain makes quitting difficult. So A) supports argument

(B) Each group in the study included four hundred randomly selected participants. Since participants are randomly selected, there is no bias in the group creation. Hence it does not counter the argument in any way and hence support in a weak way

(D) Aerobic exercise can stimulate the brain's production of endorphins, which reduce tension. As tension makes quitting difficult, exercise definitely helps quitting.

(E) Of those in the second group in the study, 38 percent had not smoked at the one-year mark. So good percentage of ppl from second group has quit smoking. This also supports the argument .

(C) Nonsmokers accustomed to regular exercise do not gain weight when they stop exercising. This statement seems irrelevant to the argument.

So IMO ans is C

What is the correct answer?

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by paddle_sweep » Mon May 10, 2010 2:06 am
IMO it's C. Pls post OA.

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by thephoenix » Mon May 10, 2010 2:08 am
oa c
Many of the great achievements of the world were accomplished by tired and discouraged men who kept on working