Relative Humidity Is a Measure of ________

Multiple Choice

Relative humidity is a measure of ________.

A) how much water vapor is in the air
B) the ratio of water vapor in air to the amount of air
C) the amount of water vapor in the air compared to some standard amount of water vapor
D) the ratio of the water vapor in the air to the amount of water vapor that it would take to saturate the air
E) none of the above