Concept: Rate of evaporation depends on surface area, temperature, wind, and humidity, not on the volume of the liquid.
Explanation: Evaporation is faster when temperature is higher.
Wind removes vapour above the liquid, increasing evaporation.
A larger exposed surface area also increases evaporation.
Volume (or total amount of liquid) does not directly change the rate of evaporation.
So the factor that does not affect evaporation rate is volume.
Answer: B. volume