Why Is It That Adolescent Girls Are More Frequently Affected

Why is it that adolescent girls are more frequently affected by the symptoms of depression than adolescent boys?

A) Because teachers tend to be more encouraging of positive behaviors in boys than they are of girls during junior and senior high school years.
B) Because parents tend to be much more supportive of boys than girls during adolescence.
C) Because research has found that girls are genetically more likely to suffer from depression during these formative years than are boys.
D) Because the social challenges of adolescence are often greater for girls than for boys.