Where can the fire alarm system be shut off?

The fire alarm system can be shut off at the main control panel, which is specifically designed for this purpose. The main control panel serves as the hub for monitoring and controlling the entire fire alarm system within a building. It allows trained personnel to acknowledge, silence, or reset alarms as necessary in response to incidents or false alarms.

This option is correct because it directly references the designated location where authorized personnel are permitted to manage the system effectively. Other locations mentioned, such as fire alarm boxes and exit doors, are not intended for shutting off the system. The fire alarm box is used to manually activate the alarm in case of a fire, while the exit door serves as an egress route for occupants. Fire extinguishers are safety devices for putting out small fires but are unrelated to the operation or control of a fire alarm system.