Which one of the following is an example of Hormone releasing $IUD$ ?

According to the World Health Organisation $(WHO)$, reproductive health means a total well-being in all aspects of reproduction, i.e., physical, emotional, behavioural and social. The headquarters of $WHO$ are located in

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

The animal population becomes too large for its feeding source or its habitat, its members starve die but humans escape this disaster by

$A$ : Every sixth person in the world is an Indian.
$R $: Life expectancy depends upon average life span