A. Draining all stagnant pools of water
B. Eliminating one of the development stages of the insect
C. Employing a lot of labourers to physically handpick the insect pests
D. Erecting physical barriers against insect pests
E. Using stronger insecticides which can kill a greater number of insect.
Correct Answer:
Option B – Eliminating one of the development stages of the insect
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