Final answer:
Wet clothes drying on a clothesline is an example of evaporation, where the moisture in the clothes transitions from a liquid to a gas due to energy absorption from the sun.
Step-by-step explanation:
The process of wet clothes drying on a clothesline involves evaporation, which is the change of state from a liquid to a gas below the boiling temperature of the water. This physical change occurs when the water molecules on the surface of the clothes absorb enough heat from the sun to transition into water vapor. Unlike boiling, which happens at the boiling point of a liquid, or condensation, which is the change of state from a gas to a liquid, evaporation takes place at temperatures below the boiling point and involves individual water molecules escaping from the liquid state to become vapor.