Which of the following rural water supplies uses a tank holding between 22,771 to 18,927 L (600 and 5,000 gallons) of water that is carried on an apparatus that can be set up quickly?

The correct response refers to a portable tank, which is a crucial tool in rural firefighting scenarios where water supply may be limited. A portable tank is designed to hold a significant amount of water, typically in the range specified, and can be quickly deployed in various locations as needed. This makes it highly effective for firefighting operations in areas lacking a reliable water source.

Portable tanks are beneficial because they can be filled by a water supply vehicle or tanker and then used to supply water to firefighting apparatus, thereby enabling a more efficient response in rural areas. The portability aspect allows firefighters to set up these tanks in a matter of minutes at the required sites, facilitating quick access to water during an emergency without the need for permanent infrastructure.

In contrast, other options do not align with the 22,771 to 18,927 liters specification or the quick set-up requirement. A tanker shuttle refers to a coordinated operation involving tankers transporting water to a fire scene, while a mobile water supply apparatus generally refers to the vehicles equipped to carry and deliver water rather than the tanks themselves. A static water supply, such as a pond or lake, does not offer the rapid deployment feature that a portable tank provides.