Question

an effective approach to preventing future shortages of usable water should focus on ____ individual attempts to conserve water reducing the pollution of existing water sources developing new ways to produce fresh water such as desalination all of the answers are correct

Explanation:

Individual water - conservation helps reduce overall water use. Reducing pollution of existing water sources keeps water usable. Developing new ways like desalination increases the fresh - water supply. All these contribute to preventing water shortages.

Answer:

D. All of the answers are correct