Biological pest control involves
a. eliminating pests with pesticides
b. using biological mechanisms to eliminate pests
c. planting a new crop every year
d. burning crops

Biological pest control is a bio effector-method of controlling pests. This controlling method involves the use of naturally occurring diseases, infectious organisms, parasites, and predators that will be helpful to control pests.
It should be B hope this helps

B is the correct answer. In biological pest control, biological mechanisms such as predation are used to eliminate pests - for example, lady bugs are deployed to eat aphids. While the predation, paracistism and herbivory are natural, typically humans manage the situation to avoid it getting out of hand.

The answer is option a