Question

the first menstrual period is called:
a menopause.
b primimenorrhea.
c menstruation.
d menarche.

Explanation:

Menopause is the end of menstruation. Menstruation is the general term for the menstrual cycle. Primimenorrhea is not a standard term. Menarche specifically refers to the first menstrual period.

Answer:

D. menarche