Which sprinkler system allows for a rapid response to fire through repeated flow cycles?

The multi-cycle system is designed to allow for rapid response to fire through repeated flow cycles. This system can activate multiple times if necessary, enabling it to effectively handle varying intensities of a fire situation. The ability to go through repeated flow cycles ensures that water is supplied quickly and efficiently, reducing the time it takes to control the fire.

In contrast, other systems either do not have the same capability or are designed for specific situations. For instance, a looped system effectively distributes water throughout a structure but doesn't inherently focus on rapid cycling. A dry-pipe system is designed to keep the pipes filled with air rather than water until a fire is detected, which can delay activation. The preaction system combines features of both wet and dry systems and requires a fire detection mechanism to activate water flow, which can also introduce delays.

Therefore, the particular function of the multi-cycle system to provide repeated and timely responses makes it the best choice for swiftly addressing fire emergencies.