Correct answer is option A - follicle stimulating hormone (FSH)
FSH is a gonadotropin secreted from the anterior pituitary gland in response to gonadotropin releasing hormone from the hypothalamus. FSH stimulates the maturation and growth of immature oocytes into mature (graffian) follicle.
Progesterone is secreted by the corpus luteum until placenta develops and continues the production of progesterone throughout pregnancy. It prepares endometrium for uterine implantation.
Estrogen is produced by granulosa cells of the developing follicle. Estrogen exerts both positive and negative feedback on LH at different times during the menstrual cycle.
Luteinizing hormone (LH) is a gonadotropin secreted by the anterior pituitary just like FSH. LH is known to trigger ovulation.