The correct option is D Condensation
The water cycle involves the continuous circulation of water on, above and below the surface of the Earth. Due to the heat of the sun, water from the river gets converted into water vapors by the process called evaporation. These water vapors get carried up where eventually the colder temperature of the atmosphere causes it to condense into small water droplets. This process is called condensation. These water droplets accumulate into clouds and when these clouds become heavy with the droplets, it pours as rain. This process is called precipitation or rainfall.