I think the anwser is a because a blood clot in the brain can cause a stroke because your blood staying around in one place can cause you to have a stroke.
1: seniors in high school because that is when everyone is wanting to be the most popular.
2: ????
3:???
Answer:
Criticizing yourself (negative self-talk)
Driving fast in a car.
Chewing your fingernails.
Becoming aggressive or violent (hitting someone, throwing or kicking something)
Eating too much or too little or drinking a lot of coffee.
Smoking or chewing tobacco.
Drinking alcohol.
i think these unhealthy ways usually don't work very well for dealing with stress because most of these can cause more pain.