What type of nozzle can extend an attack line by adding more lengths of hose?

The breakaway nozzle is notably designed to facilitate the extension of an attack line by allowing additional lengths of hose to be added seamlessly. Its construction allows firefighters to effectively connect multiple segments of hose, enabling operations in varying conditions and helping to cover larger areas without compromising the water supply. The functionality of this nozzle is crucial during firefighting efforts, especially when access to the fire scene requires long hose stretches or when navigating obstacles.

The other nozzle types serve different purposes. An adjustable nozzle allows the firefighter to modify the water flow pattern and volume but does not inherently connect hoses. A slide valve nozzle also provides control over the water flow but is focused on managing its discharge rather than extending the line. Lastly, a flow control nozzle ensures the regulation of water flow, similar to an adjustable nozzle, but again does not relate to the extension of the hose itself. Thus, in the context of extending an attack line, the breakaway nozzle stands out as the correct option.