English, asked by jodiecapague10, 3 months ago

when does menstruation begin

A. when the egg cell is not fertilized by a sperm cell
B. when the egg cell matures in the ovary
C. when the uterus lining starts to thicken
D. when the matures egg inside an ovary begins to bleed

Answers

Answered by harshinichintha

1

Explanation:

when the egg cell is not fertilized by a sperm cell

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