What type of pump can be carried by fire fighters to a water source?

Answer: B — Portable pump

The choice of a portable pump is correct because these pumps are designed specifically for ease of transport and deployment by firefighters in various situations. Portable pumps are lightweight, often gas-powered or equipped with engines that make them suitable for use in off-road conditions or areas without direct access to a fire truck. They are capable of drawing water from different sources, including open bodies of water like lakes and rivers, which can be crucial in firefighting operations when other water supply options are limited. In contrast, stationary pumps are generally fixed installations and are not designed for transport, making them impractical for on-scene firefighting needs. Submersible pumps, while effective for moving water from below the surface, are typically not carried for immediate deployment and are often placed in water rather than moved around. Electric pumps can be effective in certain situations, but they require access to power sources and may not be as versatile or practical in remote locations as portable pumps.