Fact 1: Brain cells die quickly if their oxygen supply is cut off.

Fact 2: Air contains oxygen.

Given the two facts above, answer the question "What happens to brain cells when the air supply is cut off?" with the following options: 
- strangulation
 - breathe
 - lead poisoning
 - death
 - hippocampus
 - painful
 - loss
 - die


 

    death     