Studying how people get alone with one another?
A. has little use outside the work place.
B.can improve a persons personal life
C.won't help a worker become more production
D.for most people is a difficult thing to do
I would choose B, assuming that those people put their information to use.
I would also suggest proofreading your posts for typos. Typos make your posts harder to read and may change the meaning in some instances. This will help you get "alone" (sic) with others.
I hope this helps.