Maintains the endometrial lining of the uterus during pregnancy
Correct
Explanation:
Progesterone is necessary to maintain the endometrial lining of the uterus during pregnancy. It is human chorionic gonadotropin (hCG) that acts to ensure the corpus luteum of the ovary continues to produce estrogen and progesterone. Estrogen contributes to mammary gland development, and human placental lactogen regulates maternal glucose, protein, and fat levels. (less)