Which is the most ecologically viable method of insect pest control?
Draining all stagnant pools of water
Eliminating one of the development stages of the insect
Employing a lot of labourers to physically handpick the insect pests
Erecting physical barriers against insect pests
Using stronger insecticides that can kill a greater number of insect
Correct answer is B
No explanation has been provided for this answer.