BOTANY

Detailed explanation-1: -So, the correct answer is ‘Bacteria have been engineered to clean up oil spills’

Detailed explanation-2: -The techniques employed in genetic engineering have led to the production of medically important products, including human insulin, human growth hormone, and hepatitis B vaccine, as well as to the development of genetically modified organisms such as disease-resistant plants.

Detailed explanation-3: -Crop genetic engineering includes: 1) DNA isolation 2) gene cloning 3) gene design 4) transformation, and 5) plant breeding.

Detailed explanation-4: -Answer: C-Inserting a gene into plants that makes them resistant to insects.