$A$ method of birth control is:

$IUDs$ 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:

What is the significance of the progesterone-estrogen combination as a contraceptive measure?

Copper-$T$ prevents:

What is the function of the gossypol pill derived from cottonseed?

Which of the following is a wrong match between the type of contraception and its function?
Contraceptive device - Function