$Saheli$ is a:

$A$: Surgical methods block gamete transport and thereby prevent conception.
$R$: The surgical method used in the male for this purpose is called vasectomy.

$A$: Periodic abstinence is a natural method of contraception in which couples avoid or abstain from coitus from day $10$ to $17$ of the menstrual cycle,when ovulation is expected.
$R$: Day $10$ to day $17$ of the menstrual cycle is considered a safe period.

Give scientific reasons: Pregnancy can be stopped or prevented without artificial methods of family planning.

Which one of the following is a hormone-releasing $IUD$?

The rhythm method of temporary contraception is based on which feature of the menstrual cycle?