You are presented with the question "What do animals feel when threatened?" and the following answer choices: 
- cold
 - negative
 - Sadness
 - Warmth
 - Stress
 - Calmness
 - deadly
 - influenza

Now knowing that threatening behavior causes a fight-or-flight response in animals and stress triggers the fight or flight response within the body, choose the best answer.


 

     Stress    