I think it’s the last one
The answer is the fight or flight response.
The fight or flight response is a survival mechanism in the body in the nervous system. It is how we respond to a stressful situation and is there to protect us from harm. Therefore it is not a risk factor for violence. It's our bodies natural way to protect us from violence.
The other choices are sadly all risk factors for violence.
No, if you were eating cheese you should wash your hands thoroughly and then spray perfume on them, and if that doesn’t help it then I suggest you should see a real doctor