The method of natural contraception which requires correct knowledge of the menstrual cycle is

Choose the correct option which can be used by females as injections or implants under the skin for contraception from the following:
$(i)$ Progestogens
(ii) Progestogen + estrogen combinations
(iii) Estrogen
(iv) Progestasert

Which of the following is an ideal contraceptive for females who want to delay pregnancy and space out children?

The mechanical measures of population control include:

Match the following figures with their respective identities:
$I$. Tubectomy $II$. Vasectomy
$III$. Implants $IV$. Condoms
$V$. Copper$-T$

Match the following methods $(A-D)$ with their mode of action $(i-iv)$ for contraception and select the correct option:

Method	Mode of Action
$(A)$ Pills	$(i)$ Prevents sperm from reaching the cervix
$(B)$ Condom	$(ii)$ Prevents implantation
$(C)$ Vasectomy	$(iii)$ Inhibits ovulation
$(D)$ Copper-$T$	$(iv)$ Semen contains no sperm