When the water evaporates it turns into water vapor. Since the water vapor is less dense, and thus easier, than the air, it lifts up into the atmosphere. On its way up , the water vapor will eventually reach a certain height where the temperature is much colder, and that will start to process of condensation. As it condensates, the water vapor turns into tiny drops of water, and it starts to create a cloud. Under the influence of the pull force of the gravity, this tiny drops will start falling back on the Earth's surface in the shape of a rain.
It would be C. Rain. Water is evaporated from the earth into the sky to form clouds. Then it turns into rain that falls to the ground, and this process continues.
I hope this helped if you need a better explanation then ask, and I'll see if I can't provide you with one.
