What is the function of the $RNA$ interference $(RNAi)$ mechanism in all eukaryotic organisms?

$RNA$ interference involves

What is Basmati rice famous for?

Consider the following statements about the responsibility of $GEAC$ (set up by the Indian Government):
$I$. $GEAC$ makes decisions regarding the validity of $GM$ research.
$II$. It checks the safety of introducing $GM$ organisms for public services for their large-scale use.
Which of the statements given above is/are correct?

Statement-$A$: At present,about $30$ recombinant therapeutics have been approved for human use the world over.
Statement-$B$: $27$ documented varieties of Basmati rice are grown in India.

What is the full form of $G.E.A.C.$?