A 25 years old female goes to a doctor. She asks the doctor that after 4 days there is the due date of her menses and she wants to postpone bleeding for some days as she will be engaged in some official work during those days. Which hormone will the doctor advise her to take?
(A)FSH
(B)Oestrogen
(C)Progesterone only
(D)LH only

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Hint: There are several hormones that are related to the phenomenon of the menstrual cycle in female humans. The hormone of pregnancy is what the doctor would advise the female to postpone the bleeding as this hormone has the ability to stop menses for a while just like in the case of pregnancy.

Complete answer:
The doctor will advise the female to take Progesterone only as it will help to postpone the bleeding for some days.
Progesterone is a steroid sex hormone closely involved in the menstrual cycle and embryogenesis of humans. It is secreted by the corpus luteum and is responsible for the maintenance of the endometrium of the uterus. As long as the Progesterone is secreted in the body, the menses don't begin and therefore, the doctor advised her to take this hormone to postpone the bleeding. The secretion of this hormone stops when the corpus luteum degenerates in the absence of a fertilization event. This causes the endometrium to break down and menstrual bleeding begins.

Additional Information: FSH- It is a gonadotropin and is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland. It is responsible for the regulation of the development, growth, pubertal maturation, and reproductive processes of the body.
Oestrogen- It is another sex hormone synthesized in all vertebrates and some insects. It is responsible for the development and regulation of the female reproductive system and secondary sex characteristics. These are of 4 types- estrone, estradiol, estriol, and estetrol.
LH- It is produced by gonadotropic cells in the Pituitary gland and is responsible for ovulation and development of corpus luteum in females. In the case of males, it stimulates Leydig cell production of testosterone.
So, the correct answer is "Progesterone only".

Note: Progesterone has various important functions in the human body in hormonal interactions as well as the development of the reproductive systems, breast, and sexual characteristics. It is also an essential metabolic intermediate in the production of sex hormones and corticosteroids. It is also used as medication in menopausal hormone therapy, transgender hormone therapy for transgender, etc.