In a woman of reproductive age with a regular menstrual cycle of 28 days, if a scraping is done on the 17th day of her menstrual cycle, which phase should the endometrium be in?
Correct answer: C. secretory early
On the 17th day of a 28-day menstrual cycle, the endometrium is in the secretory early phase. This is because by this time, the corpus luteum has formed and started secreting progesterone, initiating the secretory changes in the endometrium.