Hormone functions in the menstrual cycle

Steps:

• Identify key hormones: FSH develops ovarian follicles, LH triggers ovulation, oestrogen thickens uterine lining, progesterone sustains it.
• Match functions: Egg release occurs via LH surge at mid-cycle.
• Eliminate mismatches: FSH aids growth, not release; oestrogen builds lining; progesterone prepares it.
• Confirm LH's role in stimulating egg release from mature follicle.

Why C is correct:

• LH surge induces ovulation, releasing the egg from the ovary, as defined in reproductive physiology.

Why the others are wrong:

• A: FSH stimulates follicle growth and egg maturation, not release.
• B: Oestrogen promotes proliferation and repair of uterine lining, not maintenance.
• D: Progesterone maintains and secretes uterine lining for implantation, not repairs it.

Final answer: C