The correct answer is: C. The level of the water in the glass would not change.
Saturated air is air that contains as much water vapor as it can hold at a given temperature. If a glass of water were surrounded by saturated air, the water in the glass would not evaporate because the air already contains all the water vapor it can hold. The water temperature would also not change because the saturated air would not be able to transfer heat to or from the water.
Option A is incorrect because the level of the water in the glass would not decrease. The water in the glass would not evaporate because the air already contains all the water vapor it can hold.
Option B is incorrect because the water’s temperature would not increase. The water temperature would not change because the saturated air would not be able to transfer heat to the water.
Option D is incorrect because the water’s temperature would not decrease. The water temperature would not change because the saturated air would not be able to transfer heat from the water.