CAGRD sets up a system for water providers and residents to demonstrate a(n) ______ water supply.

The correct answer, "assured," reflects the purpose of the Central Arizona Groundwater Replenishment District (CAGRD) in establishing a framework for water supply reliability. The CAGRD is designed to provide a mechanism through which water providers can demonstrate that they have a dependable and sustainable supply of water, which is essential in a region that faces significant water management challenges.

By showing an "assured" water supply, CAGRD helps ensure that residents and businesses in the service area have access to water resources sufficient to meet their needs, even in times of shortage or drought. This assurance is critical for planning and development purposes, as it builds confidence in the availability of water, supporting growth and sustainability in the region.

The other options do not accurately capture the essence of what CAGRD aims to achieve. An "emergency" water supply implies a temporary fix in response to a crisis, rather than a stable, planned approach. "Additional" does not convey that there is a reliable source already established, nor does it encapsulate the comprehensive nature of the planning involved. "Temporary" suggests a short-term solution, which runs counter to the long-term water management strategies that CAGRD is designed to implement. Thus, the term "ass