Answer w/ Explanation:
Slowly-rising levels of FSH and LH cause the growth of follicles on the surface of the ovary, which prepares the egg for ovulation. As the follicles grow, they begin releasing estrogens and a low level of progesterone. Progesterone maintains the endometrium, the lining of the uterus, to help ensure pregnancy.
I hope it helps :)) I'm also sorry if i got it wrong.. Anyways, study well!
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