Which of the following is a common indicator of reproduction and occurs between menarche and menopause?

The reproductive cycle in female primates,such as monkeys,apes,and human beings,is called:

In a $28$-day human ovarian cycle,ovulation occurs on:

Given below is a flow chart showing ovarian changes during the menstrual cycle. Fill in the spaces by providing the names of the hormones responsible for the events shown.
$\boxed{\text{Primary follicles}}$
$\downarrow \leftarrow \boxed{A}$
$\boxed{\text{Graafian follicle}}$
$\downarrow \leftarrow \boxed{B}$
$\boxed{\text{Ovum}}$
$\downarrow \leftarrow \boxed{C}$
$\boxed{\text{Corpus luteum}}$

What is the typical duration of the menstrual cycle in human females (in $days$)?

The menstrual cycle in a normal adult woman is of (in $days$)