(c)Corpus luteum
Explanation: The endometrium thickens as a result of estradiol and progesterone released by the corpus luteum. The follicles produce both progesterone and estradiol.
(c)Corpus luteum
Explanation: The endometrium thickens as a result of estradiol and progesterone released by the corpus luteum. The follicles produce both progesterone and estradiol.