Answer: C) The water cycle
Explanation:
Freshwater is a naturally occurring source of water. It exhibit very low salt concentration. It includes water of ice sheets, glaciers, rivers, bogs, lakes and underground water source called as groundwater. The freshwater is required for the survival of living organisms on earth. The freshwater is a renewable resource because it can be replenished after use by the water cycle. The water cycle involves the evaporation of water from the freshwater sources or other water sources, formation of water vapors in the atmosphere, condensation, and precipitation of water in the form of rain or snow. By this way the freshwater renews in nature in the form of precipitation by water cycle.
