question_answer

Relative humidity can be increased by

1. Increasing the moisture without increasing the temperature.

2. Increasing the temperature without increasing the moisture.

3. Decreasing the temperature without increasing the moisture.

4. Decreasing the moisture without decreasing the temperature.

A)  1 and 2           

B)  1 and 3

C)  2 and 3           

D)  3 and 4