Which of the following can lawfully use physical force to maintain order?

The ability to lawfully use physical force to maintain order is an important responsibility in various professions that deal with public safety and security. Security guards are specifically trained to manage and restrain individuals when necessary, particularly in situations involving potential threats or disturbances.

Although bus drivers and flight attendants have authorizations to report and manage unruly behavior, their ability to use physical force is typically limited and is not as extensive as that of security personnel. They may intervene in emergencies or to ensure safety, but their primary role is not enforcement or physical containment.

The choice that encompasses all options indicates that while each group may have different levels of clearance and training regarding physical force, they all harbor some legal capability to act when faced with specific situations that threaten order. Hence, the answer that includes all these roles demonstrates an understanding of the various contexts in which physical force can be applicable and underscores the diverse responsibilities of individuals in maintaining safety across different environments.