Which hormone is described as the most important male sex hormone and is involved in puberty?

• A. Estrogen
• B. Oxytocin
• C. Testosterone
• D. Prolactin

Answer: (C)

Testosterone is the primary male sex hormone and the main driver of puberty in males. It’s produced mainly in the testes under signals from the pituitary gland, and it triggers the development of male secondary sexual characteristics such as facial and body hair, a deeper voice, increased muscle mass, and the maturation of the testes and sperm production. Estrogen is the main female sex hormone, though men have some amount of it, it doesn’t drive male puberty. Oxytocin relates to bonding and reproductive behaviors, not the hormonal trigger for puberty. Prolactin is mainly involved in milk production and isn’t the hormone responsible for initiating male puberty.