Astudy followed a group of teenagers who had never smoked and tracked whether they took up smoking and how their mental health changed. after one year, the incidence of depression among those who had taken up smoking was four times as high as it was among those who had not. since nicotine in cigarettes changes brain chemistry, perhaps thereby affecting mood, it is likely that smoking contributes to depression in teenagers. which of the following, if true, most strengthens the argument? (a) participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed.(b) the study did not distinguish between participants who smoked only occasionally and those who were heavy smokers.(c) few, if any, of the participants in the study were friends or relatives of other participants.(d) some participants entered and emerged from a period of depression within the year of the study.(e) the researchers did not track use of alcohol by the teenagers.

(A) Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed.

Explanation:

This strengthens the argument, because depression doesn´t correlates directly with smoking, it rejects the idea of the Cause-Effect, that would say that maybe depression causes people to turn to smoking to deal with it, so if people were already depressed when entered the trial and weren´t more likely to those who didn´t to start smoking this eliminates that possibility.

i would like to compare these two interpretations of the crucible : 1) eric christ's interretation and wade bradford's interpretation. the main differences between there interretaions is that in the first one you can notice direct link to joseph mccarthy whereas the second one represents how the town is filled with hysteria.the second interpretation shows that author believes that the story   about puritan town in salem is based on actual events while the first example shows the sencible reference to sort of bias.

ok i am here, i brought some cookies and some movies. do you use blu-ray cuz thats all i brought. oh, and my friend wwill be here shortly, he is going to bring some pizza too.