<u>Answer:</u>
Limited resources contribute to evolutionary change in animals by increasing Intra-specific competition.  
<u>Explanation:</u>
- 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.
 
        
             
        
        
        
So option B (hybrids have lower fitness than either parent population) is the correct answer.
What is Reinforcement?
Reinforcement is a consequence used in behavioral psychology to strengthen an organism's future behavior when that activity is preceded by a specific antecedent stimulus. This strengthening impact can be quantified as a higher frequency of behavior, a longer duration of behavior, a greater volume of behavior, or a shorter latency.
To learn more about Reinforcement
brainly.com/question/1483660
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B, C, D, B
I hope these are right, hope this helped.