During Adolescence, the Physical Activity Levels of Males Continue to Increase

Multiple Choice

During adolescence, the physical activity levels of males continue to increase, while those of females tend to level off, or even decline. This is most likely due to

A) degeneration of muscle tissue in females.
B) traditional gender-role socialization of females in our culture that discourages physical activity (especially in athletics) .
C) hormone changes across the period of adolescence.
D) the secular trend.