Which of the following is a primary goal of water conservation in Arizona?

Promoting sustainable water usage is a primary goal of water conservation in Arizona due to the state's arid climate and ongoing challenges related to water scarcity. Arizona faces significant water supply issues, particularly given its reliance on both surface water and groundwater sources. Sustainable water usage ensures that current water needs are met without compromising the ability of future generations to meet their own needs. This is critical in maintaining the ecological balance and supporting economic activities, such as agriculture, that are vital to the state's economy.

Focusing on sustainable consumption encourages practices that protect water resources, such as using water-efficient technologies, improving irrigation practices, and fostering responsible community engagement in water management. It supports the long-term availability of this vital resource, which is essential given Arizona's growing population and the potential impacts of climate change on water availability.

Other options, such as maximizing crop yields, while important in agricultural contexts, do not align with the broader aim of long-term conservation and sustainability. Eliminating all water usage is not feasible or practical in any context, especially in a region dependent on water for agriculture, industry, and daily life. Reducing costs associated with water treatment may be a beneficial side effect but does not capture the overarching goal of promoting sustainable practices that protect and manage water resources effectively.