A water-pumping fire apparatus is called a?

• A. Pumper
• B. Pressure relief device
• C. Preservice test
• D. Slow operating valve

Answer: (A)

A water-pumping fire apparatus is called a pumper because its primary role is to pump water for fire suppression. This vehicle carries a pump, often a tank of water, and hoses to deliver water at high pressure to attack lines, drawing from a hydrant or a water source as needed. The other options describe components or procedures rather than the vehicle itself: a pressure relief device is a safety valve on the pump system; a preservice test is an inspection performed before use; and a slow operating valve is a valve feature, not the name of the apparatus.