Which type of sprinkler system provides multiple routes for water flow to the sprinklers?

The correct choice is the type of system that provides multiple routes for water flow to the sprinklers. A looped system involves a network of pipes that connect to the sprinklers, creating a loop that allows for multiple pathways for the water to travel. This design ensures that if one section of the system is compromised or closed off, water can still reach the remaining sprinklers through the alternative paths. This redundancy enhances the reliability and effectiveness of the sprinkler system, as it allows for better coverage and pressure maintenance throughout the system.

In contrast, other types of systems, such as dry-pipe systems, are designed to prevent water from being present in the pipes until a fire occurs, which doesn't inherently provide multiple flow routes. Multi-cycle and gridded systems may have their specific configurations, but they do not fundamentally focus on providing multiple routes for water flow like a looped system does.