'Nirodh' is a popular brand of

What is the withdrawal method of natural contraception?

$A$ : Intrauterine devices $(IUDs)$ are a very effective contraceptive method.
$R$ : $IUDs$ do not allow sperms to enter the uterus.

Match List-$I$ with List-$II$ with respect to methods of contraception and their respective actions.

List-$I$	List-$II$
$(a)$ Diaphragms	$(i)$ Inhibit ovulation and implantation
$(b)$ Contraceptive pills	$(ii)$ Increase phagocytosis of sperm within uterus
$(c)$ Intra Uterine Device	$(iii)$ Absence of menstrual cycle and ovulation following parturition
$(d)$ Lactational amenorrhea	$(iv)$ They cover the cervix blocking the entry of sperms

Choose the correct answer from the options given below:

The trade name of the weekly oral contraceptive pill is:

What is the mode of action of $Saheli$?