Which system in a commercial building is responsible for fire suppression?

The fire sprinkler system is specifically designed for fire suppression in a commercial building. This system comprises a network of pipes and sprinkler heads that automatically activate when they detect elevated temperatures, typically caused by a fire. Upon activation, water is discharged directly onto the flames, helping to control or extinguish the fire and reduce damage, while also providing crucial time for evacuation.

In contrast, while the electrical system provides power for lighting and other systems, it does not play a direct role in fire suppression. The HVAC system is primarily responsible for heating, ventilation, and air conditioning, and although it can affect smoke movement, it is not designed for extinguishing fires. The plumbing system facilitates water supply and waste management; however, it does not specifically function as a fire suppression mechanism. Thus, the correct option highlights the dedicated nature of the fire sprinkler system in ensuring safety and fire control in commercial properties.