Which components make up a fire sprinkler system?

A fire sprinkler system is primarily designed to detect heat from a fire and effectively deliver water to suppress it. The correct choice encompasses key components integral to the function of a fire sprinkler system.

The heat sensing device is essential as it detects the rise in temperature caused by a fire and activates the sprinkler system. The deflector is another crucial component; it disperses the water in a specific pattern to ensure even coverage over the area at risk, maximizing the system's effectiveness. Finally, the discharge orifice is the opening through which the water is released, ensuring that the water flows out at the right rate and pressure to combat the fire.

Understanding these components is vital for recognizing how fire sprinkler systems operate to provide life safety and property protection during a fire event.