In the menstrual cycle, the bursting of the mature follicle to release the oocyte is triggered by which hormone?

1. FSH starts the growth of a follicle and its oocyte, so D acts before ovulation. 2. The developing follicle secretes estrogen, so A acts to build the endometrium, not to burst the follicle. 3. Estrogen makes the endometrium develop or regenerate. 4. The fully developed follicle then bursts and releases the oocyte (ovulation) under luteinizing hormone. 5. Progesterone is secreted only later by the corpus luteum, so B is ruled out. 6. Thus the trigger for ovulation is luteinizing hormone. _Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 3 "Life Processes in Living Organisms Part 2", p.40_