In General, Boys Participate More Actively Than Girls in Class

Multiple Choice

In general, boys participate more actively than girls in class discussions.Three of the following are possible reasons for this gender difference.Which one is unlikely to be a reason?

A) Girls think that appearing intelligent may interfere with their popularity.
B) Girls are more afraid of looking stupid in front of their classmates.
C) Boys are more willing to take academic risks.
D) Girls have less confidence in their social skills.