At what time can a boy start masturbation?
a: any age
b: 13 years old
c: 15 years old
d: 18 years old

Name two drugs that work to cause change in the nervous system

Which training principle states that exercising a certain body part are practicing a particular skill primarily develops that part or skill

Which of these is the best example of sexual objectification? a) a female initiates a conversation with another female. b) a male proposes marriage to a female. c) a female makes repated coments to a male about his appearence. d) a female proposes marriage to a male.