If a female deer mate with male that have largest antlers we are witnessing-?

If a female deer mates with a male that has the largest antlers, we are witnessing sexual selection. Sexual selection is a form of natural selection in which certain traits are favored because they increase an individual's ability to attract a mate. In the case of deer, antlers are a sexually selected trait. Male deer with larger antlers are more likely to be successful in mating with females. This is because females are attracted to males with larger antlers. Larger antlers are a sign of strength and health, and females are more likely to choose males with these traits.