Relative humidity is a ratio of actual amount of water vapour (content) in the air compared to the maximum water vapour the air is able to hold (capacity) at that temperature.
Relative humidity does not tell how much water vapour is actually in the air. but, it tells how close the air is to being saturated. So, air is said to be saturated or full if relative humidity is 100%. Relative humidity (Rh) is inversely related to the air temperature.i.e. if temperature is increases, the Rh decreases and vice versa. Hence the given statement is true .