Answer:
fire prevention
Explanation:
Preventing fire is the best form of safety as, if just for example fire catches over a building and suppose if many people are stuck in it . It is always easier and safer to prevent it in the first place. If you're asking me why not a fire extinguisher then fire extinguishers are of many types [carbon dioxide, dry powder, etc. ] in case a fire catches then only they come in hand.
