Critical Reasoning

It is true of both men and women that those who marry as young adults live longer
than those who never marry. This does not show that marriage causes people to live
longer, since, as compared with other people of the same age, young adults who are
about to get married have fewer of the unhealthy habits that can cause a person to
have a shorter life, most notably smoking and immoderate drinking of alcohol.
Which of the following, if true, most strengthens the argument above?
A. Marriage tends to cause people to engage less regularly in sports that involve
risk of bodily harm.
B. A married person who has an unhealthy habit is more likely to give up that
habit than a person with the same habit who is unmarried.
C. A person who smokes is much more likely than a nonsmoker to marry a person
who smokes at the time of marriage, and the same is true for people who drink
alcohol immoderately.
D. Among people who marry as young adults, most of those who give up an
unhealthy habit after marriage do not resume the habit later in life.
E. Among people who as young adults neither drink alcohol immoderately nor
smoke, those who never marry live as long as those who marry.

Let me share my understanding of the arg and then analysis of each of the options:

arg says it is not the marriage that causes people to live longer but it is their bad habits that actually affect their health and hence for how long they will live
now my take on the options
A is out as it talks about sports
B compare who will give up the habit and as such no comparison is made here so out
C is just irrelevant makes no sense
E strongly strengthen the fact that it is not the marriage but the habits that affect the longevity, ie, it says that marrying does not impact the longevity but the bad habits
D talks about people who do not resume bad habits after marriage....No sense!

So I think I will go with E here.

Please correct my understanding.

Thanks!