What alert should the watchperson respond to during an alarm activation?

The watchperson should respond to a pressure drop alarm because it indicates a potential emergency situation that requires immediate attention. In construction sites, a pressure drop can signify issues with fire protection systems, such as sprinkler systems that are vital for safety. This kind of alarm usually indicates a loss of water pressure, which can severely compromise the ability of the fire suppression system to function effectively.

A low battery alert and a system maintenance alert, while important, do not signify an immediate threat to safety that requires urgent action. These alerts typically indicate the need for routine management or maintenance of the systems rather than a critical incident. Similarly, a regular operational alert may involve normal monitoring of operations and equipment but does not imply an immediate danger. Therefore, the priority for the watchperson should always align with responding to alarms that indicate potential hazards, like a pressure drop, to ensure the safety of the construction site.