The correct answer is:
(c) Evaporation
Evaporation is the process responsible for transforming liquid into vapor. It occurs when molecules at the surface of a liquid gain enough energy to overcome intermolecular forces and transition into the gas phase.
Here’s what the other options refer to:
- (a) Condensation: This is the opposite process, where vapor (gas) changes into liquid, typically when it cools down.
- (b) Transpiration: This is the process by which water is absorbed by plants from the soil, moves through the plant, and is released as vapor into the atmosphere, usually through pores in the leaves.
- (d) Precipitation: This refers to the process where water vapor in the atmosphere condenses into liquid or solid forms, such as rain, snow, or hail, and falls to the Earth.