You are presented with the question "behaviors increase through what that improve traits of animal's ability to survive" and the following answer choices: 
- competition
 - hunting
 - biological diversity
 - the environment
 - eating
 - produce offspring
 - natural selection
 - grooming

Now knowing that behaviors that improve fitness increase through natural selection and fitness traits relate to an animal s ability to survive and reproduce, choose the best answer.


 

       natural selection  