Answer:
The hormone directly involved in this process is called Estrogen.
Step-by-step explanation:
This hormone is correlated with the development of feminine characteristics and too, the ovulation. This hormone contains estrogens as I've mentioned, and these estrogens are produced by mature ovarian follicles. The three main ones are called estradiol, estriol and estrone. Let's think of estradiol for example, when this hormone is expelled from the body, it influences directly on the first phase of the menstrual cycle.