Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. which most likely affects the development of these traits? testes ovaries prostate gland vulva

testes

Explanation:

The testes are the male gametes which are present inside the pouch called as scrotum. The testes perform two functions that is they produce sperms and male sex hormone testosterone. The hormone testosterone is secreted by the cells of the seminiferous tubules also called as Leydig cells. The testosterone in males start producing during puberty. It is responsible for the development of secondary sexual characteristics in males like growth of facial, axial, chest and pubic hair, deepening of voice and growth of the muscles.