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I am reading the old post.
I kind of agree of the answer should be:
Single people who have health lifestyles can live as long as married people who also have health lifestyles.
Because if the single people who have health lifestyle can't live as long as married people, it means there must be some other reason (other than health lifestyle ) cause their life span difference.
On the other hand, the answer" married people" can quit bad health habit easily "just explained why they have healthier habit, not to support the conclusion. |
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