Johnny often hits his brother even though his brother does not do anything to antagonize him. Johnny's aggression is most likely due to a combination of

His aggression is a combination of his genetic makeup, the environment he grew up in, and the fact that aggression can be evolutionarily adaptive

Explanation:

In psychology, aggression refers to different types of behaviors that can re lead to physical & psychological harm to either the individual exhibiting the aggression, others people or even objects in his/her immediate environment.

Factors that could lead to it could be biological factors such as his genetic make like if he is a man or woman; environmental factors like the home and environment in which he/she grew up; physical factors like family history.

In summary, his aggression is most likely due to a combination of his genetic make up, the environment in which he grew up and the fact that his aggression could have been evolutionary.

c

explanation:

i believe the answer is c and this is only worth 10 points you might wanna change it