One secondary male sex characteristic is __________

A) the penis.
B) pubic hair.
C) the testicles.
D) the scrotum.

Secondary Male Sex Characteristic

Physical traits in males that are not directly involved in reproduction, such as facial hair, deepening of the voice, and muscle development, which typically emerge during puberty.

Pubic Hair

is hair that grows in the genital area during puberty as a secondary sexual characteristic in humans.

Penis

The male external sex organ involved in sexual intercourse, urination, and the conveyance of semen.