Respuesta :
D
The following could cause the relative humidity of an air mass to change;
- a change in its pressure
- a change in its water vapor content
- a change in its temperature
Explanation:
An increase in temperatures of an air mass means that it can acommodate more moisture. Therefore, if it retains its initial moisture content, its relative humidity will have lowered.
If an air mass gets more moisture content at its temperature, its relative humidity increases.
When the pressure of an air mass is increased (while holding its initial moisture content), its relative humidity increases because with increased pressure there’s a decrease in the moisture content it can accommodate.
Learn More:
For more on relative humidity check out;
https://brainly.com/question/3171652
https://brainly.com/question/13325518
#LearnWithBrainly