What is a key feature of a dual-stage pump?

A key feature of a dual-stage pump is its ability to switch between high volume and high pressure. This flexibility is crucial for various firefighting scenarios. When the situation requires a large quantity of water to be moved quickly, such as during a fire involving large areas or structures, the pump can operate in high volume mode. Conversely, when a focused stream of water is needed for more precise applications, such as in a fire rescue operation or to reach elevated areas, the pump can switch to high pressure mode. This adaptability allows firefighters to respond effectively to a variety of fire conditions and needs, making dual-stage pumps highly versatile and valuable in emergency situations.

The other options do not capture this fundamental capability of dual-stage pumps, highlighting why option B stands out as the correct choice.