As an air mass cools to its dew point:

A. Air pressure decreases.
B. Relative humidity decreases.
C. Cumulonimbus clouds form.
D. Relative humidity increases.



Answer :

Final answer:

When an air mass cools to its dew point, relative humidity increases.


Explanation:

As an air mass cools to its dew point, relative humidity increases. When the air cools to its dew point temperature, it becomes saturated with water vapor, leading to condensation and the formation of clouds.


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