Speed of sound in air is unaffected by change in :PressureHumidityTemperatureVolumeSpeed of sound in air is unaffected by change in :

Speed of sound in air is unaffected by change in :PressureHumidityTemp

1.	Speed of sound in air is unaffected by change in :PressureHumidityTemperatureVolumeSpeed of sound in air is unaffected by change in :
A.	Pressure
B.	Humidity
C.	Temperature
D.	Volume
Answer» B. Humidity