B principal is the answer my brother
Mark as brainlist if you can :))
Injury prevention is an effort to prevent or reduce the severity of bodily injuries caused by external mechanisms, such as accidents, before they occur.
Some examples of injury prevention
Bicycle safety.
Firearm safety.
Burn prevention
Playground Safety
Its the Chromosomes, if your talking about the human cells.
1) It affects the brain
2) Mental alertness
3) irritability
I know cocaine and heroin that’s it