What is the significance of a 'fire department connection' (FDC)?

Answer: B — It allows firefighters to connect hoses to supplement water supply in automatic sprinkler systems

The significance of a fire department connection (FDC) lies in its role in enhancing the water supply for automatic sprinkler systems or standpipe systems within a building. When a fire occurs, the FDC serves as a vital access point for firefighters to connect hoses directly to the standpipe or sprinkler system. This connection allows firefighters to supplement the water flow, ensuring that an adequate volume of water is available to combat the fire effectively. The FDC is strategically installed at specific locations to enable quick access, enabling firefighters to connect their hoses and boost the existing water supply without having to directly draw from external sources, which might be limited during an emergency. This capability can be crucial when a building's internal water supply is insufficient to handle the demands of a large fire. It ensures that firefighters can maintain a continuous and effective water stream to suppress flames and protect life and property.