The hormone testosterone

A) is found only in females.
B) determines the sex of the developing person.
C) stimulates growth of the female sex organs.
D) stimulates growth of the male sex organs.

Testosterone is a male sex hormone that stimulates the growth of male sex organs such as the penis, testes, and prostate gland. It is also responsible for male secondary sex characteristics, such as facial and body hair, deepening of the voice, and increased muscle and bone mass. It is not found only in females and does not determine the sex of the developing person. It does not stimulate growth of the female sex organs.