$A$ contraceptive pill contains:

$A$: Surgical method of contraception is a terminal method to prevent any more pregnancies.
$R$: Surgical methods of contraception prevent gamete formation.

Oral contraceptive pills are taken daily for a period of $...$ days. After a gap of $...$ days,this process is repeated until the woman desires to prevent conception.

Use of spermicidal creams,jellies and foams along with diaphragms,cervical caps and vaults leads to

'Nirodh' is a popular brand of

Which of the following birth control measures can be considered as the safest?