Lactational amenorrhoea is a natural way of birth spacing. It is due to the high level of

Progestasert is an $IUD$ which makes the uterus unsuitable and cervix hostile to the sperms as they are:

This method is based on the fact that as long as the mother breastfeeds the child fully, the chances of conception are almost zero. Identify the method.

The period of periodic abstinence is:

Which of the following contraceptive methods involves a role of hormones?

In vasectomy,initially,what is the first step performed?