Concept:Evaporation is the change of liquid into vapor below its boiling point. Its rate depends on surface area, temperature, humidity, and wind speed.
Explanation:Larger surface area leads to faster evaporation – directly proportional.
Higher temperature gives more kinetic energy to particles, increasing evaporation – directly proportional.
Humidity is the water vapor already in air. High humidity reduces evaporation because air is already saturated – inversely proportional.
Higher wind speed carries away vapor, speeding up evaporation – directly proportional.
Thus, only humidity is inversely proportional to the rate of evaporation.
Answer:Humidity (Option C)