Answer: a). Insert Gene's that produce anti- insect chemicals into the plants.
Step-by-step explanation:
Biotechnology is a field of science which involves the manipulation of genetic make up of the organisms. This improves the quality of living beings.
Among the options given, insert gene that produce anti- insect chemicals into the plants is the correct option. This is because of the fact that this involves the manipulation of the genome of the organism that is plant to provide it resistance against insect infestation.