In what situation must a two-way communication system be provided in areas of refuge?

A two-way communication system in areas of refuge is essential for several reasons related to safety and emergency response. The correct situation requires a two-way communication system to be provided to ensure that individuals in areas of refuge can communicate effectively with emergency responders or security personnel. This system is crucial during an emergency, as it allows for updates on conditions, requests for assistance, or communication of evacuation instructions.

While the other options may imply varying requirements based on size or frequency of use, the essential nature of safety regulations dictates that a consistent standard of communication must be upheld in all areas of refuge, regardless of the building's size or specific attributes. This ensures that the safety protocols are uniformly applied, thereby enhancing the protection and response capabilities during emergencies.