What action should the primary investigation team take for occupants during a CO alarm?

The appropriate action for the primary investigation team when responding to a carbon monoxide (CO) alarm is to assist the occupants in leaving the affected area. This is crucial because CO is a colorless, odorless gas that can cause serious health issues and even be life-threatening in elevated concentrations. By ensuring that occupants move to safety, the team prioritizes the health and safety of individuals who may have been exposed to CO.

Facilitating the evacuation helps remove individuals from a potentially dangerous situation and allows for a safer environment for both the occupants and the responders. Once the area is secured and the occupants are safely away from the source of the carbon monoxide, further actions such as monitoring symptoms or testing air quality can be performed to assess the situation and take the necessary next steps.