Which statement regarding sound traveling in air is correct?

Question

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

Answer 1

D. The frequency of a sound does not affect the speed at which it travels.