You are presented with the question "Competition may lead to release of " and the following answer choices: 
- Chemical energy
 - dopamine
 - insulin
 - heat energy
 - emissions
 - growth hormone
 - adrenaline
 - Energy

Now knowing that competition may lead to aggressive behaviors or displays of aggression and aggression is the drive, the adrenaline, the power, choose the best answer.


 

       adrenaline  