Which effect is caused by testosterone?

Hello. This question is incomplete. The complete question is:

"Which effect is caused by testosterone?

A)an undescended testis , B)mumps after puberty , C)physical changes at puberty , D)infertility later in life"

C)physical changes at puberty

Explanation:

Testosterone is the main male hormone, the main cause of physical changes in puberty in boys, being responsible for characteristics such as beard growth, voice thickening and increased muscle mass, in addition to stimulating sperm production, being directly related to fertility. Male In addition, testosterone is also present in women, but to a lesser extent.

After 50 years of age, there is a common decrease in testosterone production, with andropause, which is similar to menopause in women. However, decreased testosterone production in men does not mean that they become infertile, but that their reproductive capacity may be impaired as sperm production is impaired.

a lot ig i am not sure