Biology

The correct answer is: C.Natural Selection.

Explanation:

In this case, natural selection is the mechanism of evolution at work. Bats with longer hang claws have higher fitness because they are better able to cling to rocks while resting, which likely increases their chances of survival and reproduction. Over time, this trait (longer claws) becomes more common in the population because individuals with this adaptation are more likely to pass it on to the next generation.

The other options are less fitting:

A.Gene Flow: This involves th...