Final answer:
Luteinizing Hormone (LH)(c) is the hormone that triggers ovulation, which is the release of a mature egg from an ovarian follicle.
Step-by-step explanation:
The hormone responsible for ovulation is c. LH -Luteinizing Hormone. During the menstrual cycle, the hypothalamus releases gonadotropin-releasing hormone (GnRH) which prompts the anterior pituitary to produce LH and follicle-stimulating hormone (FSH). These hormones play crucial roles in the reproductive system. FSH stimulates the growth and maturation of ovarian follicles. However, it is the surge in LH that ultimately triggers ovulation, whereby a mature follicle releases an egg. This hormone also promotes the production of estrogen and progesterone in the ovaries, which are essential for the menstrual cycle.