Which type of water distribution system relies on gravity for pressure and has its storage located at a higher elevation?

The gravity-feed system is the appropriate answer because it operates on the principle of gravitational force to create water pressure within the distribution network. In this type of system, water is stored in tanks or reservoirs situated at higher elevations. As water flows downward due to gravity, it generates sufficient pressure to move the water through the distribution system to consumers.

This system is inherently efficient and reduces the need for mechanical pumps, which can require significant energy and maintenance. By utilizing gravitational potential energy, a gravity-feed system can provide a steady flow of water and maintain a consistent pressure in the lines, making it ideal for many municipal and rural water distribution applications.

In contrast, the other options each employ different mechanisms for water distribution. A pressure-fed system relies on pressurized tanks or pumps to distribute water. A pumped system utilizes mechanical pumps throughout the network, while a direct-feed system draws water directly from a municipal supply without any intermediate storage or pressure management, thus lacking the advantages of elevation-based pressure.