A) the use of chemical pesticides in small amounts
B) the use of less toxic pesticides
C) the biological control of pests
D) fumigation.
Correct Answer: C
Solution :
: Chemical pesticides are harmful and more over repeated use of one kind of insecticide in the same storage area increases the chance of development of insecticide resistance on the part of an insect pest. So, the better and safe method to control the stored grain pests is fumigation (treatment of a substance with fume or smoke) Fumigation is better and safe as the fumigants do not penetrate into the stored grains.
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