Studies About Masturbation in Adolescence Indicate That Masturbation

Studies about masturbation in adolescence indicate that masturbation

A) is higher in females than males in all age groups.
B) that males are more likely than females to view masturbation as ambiguous play.
C) that the degree to which adolescents masturbate is directly correlated with whether or not they have a partner.
D) that many males begin masturbating between ages 13 and 15.