A Conversation Is More Likely to Occur in the Campus

A conversation is more likely to occur in the campus center lounge than in the library because

A) various behavioral settings place strong demands on people to act in expected ways.
B) the density level is higher in the campus center lounge than in the library.
C) the architectural design of the campus center lounge differs greatly from that of the library.
D) more sociable personalities tend to frequent the campus center lounge than the library.