_ induces vaginal pain.

Explanation

Option A: Oxytocin is a hormone that is released during childbirth and breastfeeding. It is responsible for stimulating uterine contractions and milk production. Option B: FSH (follicle-stimulating hormone) and LH (luteinizing hormone) are hormones that are involved in the menstrual cycle. They help to regulate the development of eggs and the release of eggs from the ovaries. Option C: The hormone that induces vaginal pain is Estrogen. Estrogen is a sex hormone that is produced in the ovaries. It is responsible for the development and maintenance of female sex organs, as well as for the regulation of the menstrual cycle. During menopause, estrogen levels decline, which can lead to vaginal pain, dryness, and itching. Option D: Progesterone is a hormone that is produced by the ovaries after ovulation. It helps to prepare the uterus for pregnancy.