Final answer:
Workplace violence is commonly categorized based on the relationship between the assailant and the victim.
Step-by-step explanation:
The common approach used to categorize workplace violence is d. the relationship between the assailant and the victim. Workplace violence can be categorized based on the relationship between the person committing the violence and the target of the violence. This includes violence between coworkers, violence against supervisors, and violence against subordinates. Understanding this relationship is important in identifying warning signs and preventing workplace violence.