Final answer:
The correct device to monitor patrol movements within a building is an electronic or mechanical check point or telephone system.
Step-by-step explanation:
The correct device to monitor patrol movements when conducting routine patrols within a building is option B. Electronic or mechanical check point or telephone system. Using electronic or mechanical check points, security personnel can physically check in at predetermined locations, leaving a record of their presence. This system provides a way to track and monitor patrol movements within a building.
For example, a security guard can scan their ID card at various checkpoints placed throughout the building, creating a log of their rounds and ensuring that all areas are covered.