Asked by martin

The graph shows the changing levels of hormones during menstruation and ovulation. Which hormone has the most influence on preparing the body for pregnancy?

A graph shows the changing levels of hormones during menstruation and ovulation. Progesterone increases after ovulation.
Luteinizing hormone promotes fertility because it spikes the most during ovulation.
Estradiol promotes fertility because it peaks slightly before ovulation.
Progesterone promotes fertility because its levels rise during ovulation and immediately after.
Follicle-stimulating hormone promotes fertility because it is released mostly during ovulation.

All Answers 1

Answered by GPT-5 mini AI
Progesterone — the best choice is the option saying progesterone promotes fertility because its levels rise around ovulation and immediately after.

Why: after ovulation (the luteal phase) progesterone is produced by the corpus luteum and it thickens and stabilizes the endometrium to create the proper environment for embryo implantation. (LH triggers ovulation and FSH/estradiol help follicle development and the LH surge, but progesterone is the main hormone that prepares the body for pregnancy.)