RonPurewal Wrote:you should go back and check your answer key; the answer to this problem should be (e). not only is that the answer that makes the most sense, but it's also the answer reported for this problem on several other forums.
the purpose of the argument is to show that marriage DOES NOT extend one's life expectancy.
choice (e) is, in effect, the result of a controlled study: two groups of people are chosen who are identical in every aspect other than the variable under investigation (where "the variable under investigation", in this case, is marital status).
in this study, marital status is shown to be irrelevant to longer life expectancy. (the only difference between the two groups is that one of the groups gets married and the other group doesn't; therefore, if marriage increases life expectancy, then there should DEFINITELY be a difference in life expectancy between these two groups.)
choice (d) actually works against the argument, in two different ways.
first, the argument makes the point that the observed difference is due to behavioral differences that exist before marriage. by citing changes in behavior that occur after marriage, this answer choice actually weakens that premise of the argument.
second, since this choice describes behavioral changes that occur only after marriage, it actually supports the idea that marriage contributes positively to life expectancy -- which is the exact opposite of the idea put forward by the argument.
Ron sir, If we look at this question more technically then its a causal argument.
Question stem says Marriage causes Longer Life. That means A caused B (Longer Life Span).
This causality can be broken if we prove that something else causes B that means some C (Good Health) causes B (Longer Life span). E does that Hence E is correct.
Is my understanding correct Sir?