Because quitting smoking is very

Answer choices

1. A

   Strengthens9% picked this

   Regular exercise prevents weight

   This adds some plausibility to the idea that exercising could help someone quit smoking. But to see this, we need to notice the Breadcrumb detail in the first sentence. It tells us that quitting smoking is hard because it leads to weight gain and stress. So anything that helps people stave off stress or weight gain could potentially make it easier to quit smoking.

   9%
2. B

   Strengthens10% picked this

   Each group in the study included four hundred randomly

   This answer just improves the credibility / trustworthiness of the study. Studies have more gravitas if they're conducted on a large number of people who are randomly selected. Small numbers / self-selection bias can lead to skewed results. If we had found out that there were only 4 people in the study, we'd be like, "Psssh --- get this shallow pool of data points away from me. We shouldn't infer anything from this." So being told that each group that 400 hundred random people is reassuring to us, in terms of trusting this study's scope and methodology.

   10%
3. C

   Correct72% picked this

   Nonsmokers accustomed to regular exercise do not gain weight when they

   Why this is right

   This is talking about nonsmokers, so it has no impact. We're trying to strengthen the idea that smokers could more easily quit smoking if they replaced it with a healthy activity like aerobic exercise. Hearing about what happens to nonsmokers when they quit exercising is totally irrelevant to this conversation.

   Skill tested: Strengthen · how this choice captures the argument's function is the move to repeat next time.

   72%
4. D

   Strengthens3% picked this

   Aerobic exercise can stimulate the brain’s production of endorphins, which

   This adds some plausibility to the idea that exercising could help someone quit smoking. But to see this, like (A), we need to notice the Breadcrumb detail in the first sentence. It tells us that quitting smoking is hard because it leads to weight gain and stress. So anything that helps people stave off stress or weight gain could potentially make it easier to quit smoking. This answer is saying that exercise can help to stave off stress (it "reduces tension").

   3%
5. E

   Strengthens5% picked this

   Of those in the second group in the study, 38 percent had not smoked at

   This answer improves the credibility / trustworthiness of the study. The study showed at after one month the group doing aerobic exercise was having more luck quitting smoking. But what if that's just a fleeting hiccup, and people relapse into being smokers after a month or two? This answer rules out that possibility, informing us that the "quitting-power" of doing the aerobic exercise seems to have staying power. After 1 month, 40% of that group had quit, and after 1 year, 38% were still not smoking (only 2% of them quit and then started smoking again). That's makes it sound like aerobic exercise is a long-term solution for those who were able to quit during the study.

   5%