Answer:
Unnecessary
Step-by-step explanation:
We can define as “accident” an unintentional and preventable event that causes physical and emotional injuries, occurring in the home or social environment. Prevention is defined as actions taken to prevent the occurrence of the injury and its strategies are aimed at reducing exposure to risk factors.
If an injury is unnecessary it means that i could not happen if the actions to prevent that were taken, which means, that this injury is preventable.