The action of contraceptives is to:

$IUDs$ 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:

Which of the following is a second-generation (copper-releasing) $IUD$?

Action of which of the following hormones is blocked during the use of $RU-486$ (mifepristone)?

Match the following columns regarding the types of Intrauterine Devices $(IUDs)$:

Column $1$	Column $2$	Column $3$
$(a)$ First generation	$(p)$ High contraceptive efficacy	$(w)$ Non-medicated
$(b)$ Second generation	$(q)$ Effect on uterine lining	$(x)$ Metal ion releasing
$(c)$ Third generation	$(r)$ Low contraceptive efficacy	$(y)$ Hormone releasing

What is the purpose of the surgical method of contraception?