If You Were to Convene a Group of High School

Multiple Choice

If you were to convene a group of high school seniors who have very high mathematical ability, you would be apt to have more boys than girls in your group. Which one of the following is least likely to explain the prevalence of boys in the group?

A) On average, boys have higher verbal ability than girls.
B) More boys have very high mathematical ability than girls.
C) On average, boys have greater visual-spatial ability than girls.
D) The students' parents have encouraged sons more than daughters to pursue mathematics as a discipline.