Which of the following hormones is secreted right after ovulation?

Progesterone is the hormone that is secreted right after ovulation. Following the luteinizing hormone (LH) surge, which triggers ovulation, the ruptured follicle transforms into the corpus luteum. This structure is responsible for the production of progesterone. The primary function of progesterone following ovulation is to prepare the uterine lining for a potential implantation of a fertilized egg. It raises the endometrial lining's receptivity and promotes further changes to support early pregnancy.

While luteinizing hormone is indeed involved in triggering ovulation and is present at this time, its role is earlier in the cycle. Follicle-stimulating hormone (FSH) plays a role in the follicular phase preceding ovulation. Estradiol is also important in the menstrual cycle and in the development of the follicles, but its peak occurs just before ovulation, not immediately afterward. Therefore, progesterone is the key hormone secreted in response to the changes occurring after ovulation.