Limited resources contribute to evolutionary change in animals by increasing

Limited resources contribute to evolutionary change in animals by increasing Intra-specific competition.  

Explanation:

Intra-specific competition means competition among the members of same species.Individual of same species have same ecological niche i.e. how an organism is related with biotic and abiotic aspect of environment. So they require same resources of their survival. When population of any species increases then there is high chance of intra-specific competition because of limited resources. Intra-specific competition also determine the population size of species. For example, competition among shark rodents.

The correct answer is c