What is the quarantine regulation associated with?

$Leucaena leucocephala$ is:

The world's $P$ livestock is possessed by $Q$ and the contribution to the world farm produce is $R$.
$\quad P\quad\quad Q\quad\quad\quad\quad\quad R$
$(A)$ $70 \%\quad$ India and China $\quad 25 \%$
$(B)$ $70 \%\quad$ India and America $\quad 25 \%$
$(C)$ $30 \%\quad$ India and China $\quad 75 \%$
$(D)$ $30 \%\quad$ India and America $\quad 75 \%$

Regulations governing the movement of diseased plant material are called:

According to $NCERT$ text, which of the following are steps involved in the selection and testing of superior recombinants in plant breeding?

Who amongst the following received the Nobel Prize in $1970$ for his outstanding research contribution?