Which system is activated to assist with managing elevator operation during a fire incident?

The activation of Phase I Operation during a fire incident is crucial for managing elevator operations to ensure safety. When a fire alarm system is triggered, elevators can be recalled to a designated floor, usually the ground floor, to prevent their use by occupants who may be evacuating during the emergency. This automatic recall helps in reducing the risk of individuals becoming trapped in the elevator, which could lead to dangerous situations during a fire.

Phase I Operation involves a specific procedure where elevators are controlled by the fire alarm system, and they are made unavailable for regular use to prioritize firefighter access and to ensure that rescue operations can be performed efficiently. This system assists in directing the elevators' operation according to established fire service protocols, ultimately promoting the safety of both occupants and firefighters during an incident.

While the other systems mentioned may play roles in building safety and operations, none focus specifically on the control of elevator functionality during a fire, making Phase I Operation the correct choice for this situation.