If a room is saturated with water vapour, the temperature of the room must be
Answer Details
When air holds the maximum amount of water vapor that it can at a given temperature and pressure, it is said to be saturated. The maximum amount of water vapor that air can hold increases with temperature. Thus, if a room is saturated with water vapor, the temperature of the room must be at or below the dew point temperature, which is the temperature at which water vapor in the air begins to condense into liquid. This means that the answer is "below or at the dew point."