Researchers Have Found That Men Who Are Active Parents Have

Researchers have found that men who are active parents have lower levels of testosterone than men who do not participate in parenting. Which of the following claims does this support?

A) Behavior affects the body's production of hormones like testosterone.
B) Men with higher levels of testosterone are less likely to desire to be parents.
C) Women are better suited to parenting because they have lower and less variable levels of testosterone than men.
D) Behaviors as well as preferences are produced by inborn variations in hormone levels.