Question

The surge in luteinizing hormone that occurs during the middle of the ovarian cycle triggers

Answer 1

Ovulation  

Explanation:

In women, luteinizing hormone carries out different roles in the two halves of the menstrual cycle

• In week one to two of the cycle, luteinizing hormone is required to stimulate the ovarian follicles in the ovary to produce the female sex hormone, oestradiol
• Around day 14 of the cycle, a surge in  luteinizing hormone levels causes the ovarian follicle to tear and release a mature oocyte (egg) from the ovary, a process called ovulation
• For the remainder of the cycle (weeks three to four), the remnants of the ovarian follicle forms a corpus luteum
• Luteinizing hormone stimulates the corpus luteum to produce progesterone, which is required to support the early stages of pregnancy, if fertilization occurs