Which of the following is true about relative humidity?

a. It doesn’t change with the temperature of the air.
b. It is the actual amount of water vapor present per lb or kg of air.
c. It decreases with the air temperature.
d. For a given amount of water vapor in air, it varies with air temperature.


d. For a given amount of water vapor in air, it varies with air temperature.

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What will be an ideal response?

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