At any moment, the atmosphere contains enough water vapor to cover the entire surface of the Earth (land and ocean) with one inch of rain. As air is cooled, some of this becomes water droplets. When the water droplets within the clouds become heavy enough, they can fall as either rain, sleet, snow, or even hail, depending on conditions. What is the name of this part of the water cycle?
A. Condensation

B. Evaporation

C. Precipitation

D. Sublimation