What does 50 percent humidity mean?

a. the air contains 50 percent of the moisture it can hold before precipitation occurs.***
b. there is a 50 percent chance of precipitation.
c. the air temperature is 50 degrees Celsius.
d. there is a 50 percent chance of a thunderstorm occurring.

3 answers

Yes, a.
1.D
2.A
3.B
4.A
100%
They are right!