Concept:Evaporation decreases when atmospheric pressure increases, because higher pressure presses down on the water surface.
Explanation:Evaporation is the escape of water molecules from the lake surface into the surrounding air.
When the atmospheric pressure above the lake increases, it exerts a greater downward force on the water surface.
This force makes it more difficult for water molecules to break away and become vapour.
Hence, an increase in atmospheric pressure slows down evaporation rather than speeding it up.
Examine the other three options to confirm that they do increase evaporation.
A rise in temperature increases the kinetic energy of water molecules, helping more of them to escape.
A larger surface area of the lake exposes a greater number of water molecules directly to the air.
Faster wind removes the water vapour already present above the lake, leaving room for more molecules to evaporate.
Thus, options B, C, and D all raise the rate of evaporation.
Only option A does not.
Answer:A. Increase in the pressure of the atmosphere