What are three features of the elevated platform waterway systems?

The elevated platform waterway systems are designed to enhance firefighting capabilities by allowing for efficient water delivery at elevated heights. One key feature is the inclusion of attack lines, which are designed to provide a direct supply of water to combat fires effectively. The presence of handlines is also crucial, as they enable firefighters to maneuver and direct water flow more precisely in various conditions and scenarios.

Moreover, having two nozzles at the platform allows for simultaneous operation or the tactical versatility to adjust water flow based on the fire's intensity or location. This flexibility is particularly valuable in urban environments where access might be limited, and the nature of the fire can vary widely.

In contrast, the other options lack the comprehensive features necessary for effective firefighting from an elevated platform. For example, a response limited to automatic sprinklers and hoses wouldn't provide the necessary maneuverability and firefighting control required in many situations. The mention of a single nozzle and handlines doesn't account for the potential need for multiple streams of water, which could be critical in larger fires. Finally, multiple elevated platforms without a waterway completely undermine the purpose of providing enhanced firefighting capabilities, as they would lack the crucial water delivery system that is foundational to aerial firefighting operations.