The bats explain how biotic factors can control the population of a species in an ecosystem is competition between two species may force one of them to migrate to survive.
The correct option is (B).
<h3>What is the competition?</h3>
Competition is an interaction between two species in order to utilize one resource that is limited.
Competition is one of the factors of natural selection also.
It also helps to maintain population by migration of species due to shortage of resources.
Thus, the correct option is (B).
Learn more about competition, here:
brainly.com/question/14755413