The right option is; Farmers do not have to use harsh chemicals to save their crops.
Pest resistance is a condition where pests (such as insects, weeds, mites) develop a tolerance to a pesticide that was initially effective at controlling them. Pests that are resistant to a pesticide will not get affected by the pesticide. Pest resistant varieties have an instant effect on pests, makes crops healthy, and it assist farmers in keeping their harvest longer. With pest resistance, farmers do not have to use harsh chemicals to save their crops.