Which statement regarding sound travel in air is correct?

The frequency of a sound does not affect the speed at which it travels
As the wavelength increases the frequency also increases
A loud sound travels faster than a quiet sound
A weave with a shorter wavelength is always faster than one with a longer wavelength

The statement "The frequency of a sound does not affect the speed at which it travels" is incorrect.

The correct statement regarding sound travel in air is: A wave with a shorter wavelength is always faster than one with a longer wavelength.