Correct Answer: Dams

Solution : The correct answer is (B) Dams

Dams play a crucial role in providing clean drinking water as they are used to store and regulate the flow of water in rivers and reservoirs. They help in collecting and storing water, which can then be treated and distributed to meet the water needs of communities. Dams also support the generation of hydroelectric power, flood control, and irrigation for agriculture. While schools, shopping malls, and libraries are important infrastructure types in their respective domains, they are not directly responsible for providing clean drinking water.