Biology

The correct answer is: B.Non-random mating.

Explanation:

In this case, the two track stars chose each other as mates based on shared traits (athletic ability), which is an example of non-random mating. This type of mating occurs when individuals select mates based on specific traits, such as athleticism, rather than mating randomly.

The other options don't fit as well:

A.Gene flow: This refers to the transfer of genetic material between popula...