An example of a primary sex characteristic is

A) reproductive organs.
B) facial hair.
C) body hair.
D) bone structure.

Primary Sex Characteristic

The biological and physical characteristics that are directly involved in reproduction, such as the genitals and reproductive organs.

Reproductive Organs

Organs involved in the reproduction process, including in females the ovaries, fallopian tubes, uterus, and vagina, and in males the testes, vas deferens, and penis.

Facial Hair

Hair growth on the face, occurring typically in men, ranging from mustaches and beards to sideburns, reflecting personal and cultural significance.