The correct option is A To produce pest resistance varieties of plants.
In agriculture, there is increasing use of biotechnology for genetic mapping and marker-assisted selection to aid more precise and rapid development of new strains of improved crops and livestock. Other biotechnology applications such as tissue culture and micropropagation are being used for the rapid multiplication of disease-free planting materials. Genetically modified organisms (GMO) is the most important example of biotechnology application in agriculture. The main genetic feature introduced and applied most widely is weed killing repellent plants. The application of agricultural biotechnology is widely applied with traditional breeding, testing, farming, disease prevention, fertilizers and pesticides, and has significantly improved production volume and the quality of traditional agriculture.