Hint: A river is a naturally flowing, mainly freshwater watercourse that runs towards an ocean, sea, or lake. In rare cases, a river may run into the ground and become dry before reaching another source of water at the conclusion of its journey. Small rivers are referred to as streams, brooks, rivulets, and rills.
River linking is a project that involves connecting two or more rivers by building a network of manually constructed reservoirs and canals, giving river water to land areas that would otherwise be without it, and limiting the flow of water to the sea. It is based on the idea that surplus water in some rivers can be redirected to shortage rivers by connecting them with a network of canals.
The Indian Rivers Inter-link is a proposed large-scale civil engineering project aimed at effectively managing India's water resources by connecting Indian rivers through a network of reservoirs and canals to improve irrigation and groundwater recharge, reduce persistent floods in some areas, and alleviate water shortages in others. India has an estimated 18 percent of the global population and 4% of the world's water resources. Linking rivers and lakes is one answer to the country's water problems.
Therefore the correct answer is option ‘C’.
Note: By connecting the rivers, enormous swaths of land that would otherwise be unable to be irrigated and useless for agriculture become fruitful. During wet seasons, certain locations may face severe flooding, while others may experience drought-like conditions. This problem can be considerably mitigated by using a network of rivers to move excess water to locations that are not flooded or dry.