At what ages do the two major brain growth spurts occur? 11?12 and 13?15 12?14 and 17?18 13?15 and 17?18 13?15 and

Question 

Question 1

(TCOs 7 and 9) At what ages do the two major brain growth spurts occur?

11–12 and 13–15

12–14 and 17–18

13–15 and 17–18

13–15 and 18–20

Question 2

(TCOs 7 and 9) Which of the following is a change in primary sex characteristics that takes place during puberty?

Growth of breasts

Changing voice pitch

Growth of pubic hair

Formation of a uterus  

Question 3

(TCOs 7 and 9) Which of the following is an example of changes in secondary sex characteristics during puberty?

Growth of the testes

Growth of the breasts

Growth of the penis

Growth of the ovaries