Biology

The correct answer is: D.Non-Random Mating.

Explanation:

In this case, the male bighorn sheep fight to establish dominance, and the dominant males are more likely to mate with females. This is an example of non-random mating, where certain males are more likely to reproduce due to their physical traits (dominance). The female choice, based on the dominance of the male, is a form of selective mating, which is considered non-random.

The other options are not as fitting: