When does an alarm need to be functioning and armed?

The correct choice is that an alarm needs to be functioning and armed every night. This is vital for ensuring the security of the premises during the off-hours when the restaurant is closed. By arming the alarm every night, it serves as a deterrent against potential break-ins or unauthorized access, helping to protect the employees' hard work and the restaurant’s assets.

Maintaining an operational alarm system nightly minimizes risks and ensures safety, allowing for peace of mind for both management and staff. It is typically expected that during the hours the restaurant is not staffed or operating, the alarm system should be fully functional and active to respond to any intrusions, thereby reinforcing the importance of nightly monitoring rather than on a less frequent basis.