The answer is B because convalesce means "to recover health and strength after illness" This is the only reasonable answer.
I would have to go with D.Old age slows even the most productive and hard-working people.
<span>". . . a young married woman from New Jersey" because her age, origin, and marital status are irrelevant.
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I haven't read this but I believe the answer is A.
This is the correct form, though you need to be specific and describe who "them" is.