$A$: Lactational amenorrhoea is one of the natural methods of birth control.
$R$: High levels of prolactin inhibit the secretion of gonadotropins.

Which of the following contraceptive devices makes the uterus unsuitable for implantation and the cervix hostile to the sperms?

The Lactational Amenorrhea method is effective only up to a maximum of approximately .......... postpartum.

Which of the following is an additional advantage of hormone-releasing $IUDs$?

Contraceptive pills are very effective with lesser side effects and are well accepted by females. They work by:

$IUDs$ are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about $IUDs$?
$(a)$ $IUDs$ decrease phagocytosis of sperm within the uterus.
$(b)$ The released copper ions suppress the sperm motility.
$(c)$ $IUDs$ do not make the cervix hostile to the sperm.
$(d)$ $IUDs$ suppress the fertilization capacity of sperm.
$(e)$ The $IUDs$ require surgical intervention for their insertion in the uterine cavity.
Choose the most appropriate answer from the options given below: