According to population every ...... person of the world is an Indian

Which of the following drug is progesterone antagonist and acts as an abortion drug?

First dose of $BCG$ vaccine is given at the time of

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

Which of the following can be taken as the most convincing factor for indicating the rapid increase in population growth of a country?

Generally there was population growth rate increase in India, but in which of the following year there was decrease in population growth rate