What significant biological event occurs during menopause?

During menopause, a significant biological event is the cessation of menstruation. This occurs as a result of the ovaries gradually reducing their production of hormones such as estrogen and progesterone, leading to the end of the menstrual cycle. Menopause typically occurs in women between the ages of 45 and 55 and signifies the conclusion of reproductive capability. The ovaries stop releasing eggs, which is part of the normal aging process. This hormonal change not only influences menstruation but also brings about various physiological and psychological changes experienced by many women during this stage.

The other choices relate to aspects that are not characteristic of menopause. For instance, the initiation of egg production and final growth spurts are processes associated with earlier stages of reproductive development, while an increase in hormone levels is not typical during menopause, as the levels of key hormones actually decline.