Every Time He Spends Semester Breaks at Home, Sam's Very

Every time he spends semester breaks at home, Sam's very traditional mother asks when she will be able to tell their large extended family there will soon be a wedding. Sam, who is extremely busy with schoolwork and isn't all that socially active, sometimes wonders as well. He very much wants to get married and have a family. One thing Sam should keep in mind is that

A) attraction to others is not subject to scientific prediction.
B) absence makes the heart grow fonder; we tend to find those who live farther away from us more attractive.
C) close proximity is one of the determinants of attraction between people.
D) people tend to fear too much personal disclosure when communicating online.