A relative humidity of 100 percent means that air is? by Sunday | Jun 13 | Geography WAEC | 0 comments A. unsaturated B. saturated C. dry D. moist Correct Answer: Option B – saturated Users Also Read These:The mass of water vapour in a given volume of air is…The mass of water vapour in a given volume of air is…Which of the following is used to measure relative humidity?The instrument used for measuring relative humidity…If the partial pressure of water vapour at 27°C is…