Question

Reproductive age in women starts when their
A. Menstruation starts
B. Breasts starts developing
C. Body weight increases
D. Height increases

Answer 1

Hint: The menstrual cycle is a highlight of primates and it doesn't happen in different vertebrates. In warm blooded creatures other than primates, an alternate cycle called estrous cycle is noticed. Females of all well evolved species with the exception of primates have an estrous cycle.

Complete answer:
In females, the reproductive period of life starts at adolescence (10 to 12 years old) and by and large keeps going till the time of around 45 to 50 years. The primary start of menstruation or periods at adolescence is called menarche. It is the start of the reproductive existence of a girl. Menstruation is the intermittent release of blood and mucosal tissue from the internal covering of the uterus through the vagina. It starts with the beginning of menarche at or before sexual development or pubescence and stops at or close to menopause.
Increase in size of breast, tallness and weight increment are optional sexual characteristics. Puberty in human females and it endures upto 40-50 years for example till menopause when the reproductive limit of the female is stopped. The monthly cycle starts with the pushing off of the endometrial covering of the uterus. It is considered as the preparation of the uterus for preparation and pregnancy.
Affected by follicle invigorating chemicals an ovum and its follicle develop and the follicle secretes an increased amount of estrogen which results in the regrowth of endometrium.

So the correct answer is option A.

Note:
The human female reproductive structure performs numerous capacities like oogenesis, gathering of sperm during copulation, giving an environment helpful for preparation and providing sustenance to the growing infant.