which scenario is the best example of competition between individuals of the same species?

One of the best examples of competition between individuals of the same species is the battle for mates in animals, such as male deer (bucks) competing against each other to win the attention and access to females (does) during the mating season. This competition can involve behaviors like antler wrestling, showcasing strength and dominance, and vocalizations to demonstrate their fitness and attractiveness to potential mates. The winner gains the opportunity to reproduce and pass on their genes, while the loser will have reduced chances of reproductive success. This intense competition for mating rights is often observed in a variety of species, including elk, moose, and other deer species in their respective habitats.