Which is a sign of reproductive maturity? O the start of menstruation
O the strengthening of muscles
O the growth of body hair
O a larger body frame

The start of menstruation is a sign of reproductive maturity.

Explanation:

During the monthly hormone cycle the mucous membranes lining the inside of the uterus prepare for the possibility that an egg might be fertilized and settle in the uterus. The mucous membranes supply nutrients to the embryo if the woman gets pregnant. If the egg cell is not fertilized, it dies.

not 100% sure but i'm gonna say it's

retains water

fine grained

and is loose

your welcome

brainliest? (;