Which of the following is a transgenic plant?

The crops having $cry$ genes need:

Given below are two statements:
Statement $I$: $Bt$ toxins are insect group specific and coded by a gene $cry$ $IAc$.
Statement $II$: $Bt$ toxin exists as inactive protoxin in $B. \text{ thuringiensis}$. However, after ingestion by the insect, the inactive protoxin gets converted into active form due to alkaline $pH$ of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:

The bacterium $Bacillus$ $thuringiensis$ is widely used in contemporary biology as:

Which of the following $Bt$ crops is cultivated by farmers in India?

Cry $IIAb$ and Cry $IAb$ produce toxins that control: