Transgenic plants are mainly developed to be resistant to which of the following?

Given below are $2$ statements: one is labelled as Assertion $(A)$ and other is labelled as Reason $(R)$.
Assertion $(A) :-$ Toxic insecticidal protein of Bacillus thuringiensis does not kill Bacillus itself.
Reason $(R) :-$ In Bacillus,$Bt$ toxin protein exists as inactive protoxins.
Correct answer from the options given below :

What is the bacterium $Bacillus$ $thuringiensis$ used to prepare?

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?

Important objectives of biotechnology in the agriculture sector are:

Tobacco plants resistant to a nematode have been developed by the introduction of $DNA$ that produces (in the host cells)