Here we have to choose the correct statement which will be applicable to a jar fill of water kept in a constant temperature.
The surface of the water molecules evaporate and condense at the same rate.
Evaporation of water ⇆ condensation of water.
The rate of evaporation will increase if the outside temperature is more as the evaporation of water started at elevated temperature. The jar is kept in constant temperature thus this statement is not valid.
If the water molecules only evaporate or only condense that will violate the rule of constant mass, which is not possible.
Thus the rate of evaporation and condensation will be same for the water at the surface.
