Lactational amenorrhora is
Absence of menses in adult age
Absence of menses in elderly age
Absence of menses during lactation
No menses during pregnancy
Choose the correct option for $A, B, C$ and $D$
The mechanical measure of population control includes
What is the function of copper $-T$
$A$ : Periodic abstinence is one such natural method of contraception in which the couples avoid or abstain from
coitus from day $10 \;to\; 17$ of the menstrual cycle, when ovulation could be expected.
$R$ : $Day \;10 \;to \;day \;17$ of menstrual cycle is considered as safe period
Emergency contraceptives are effective if used within: