Answer:
The Volume increases
Explanation:
The amplitude of a wave (the distance from peak to trough) corresponds to its intensity - in the context of sound, the volume. The higher the amplitude, the higher the volume.
The frequency/wavelength of a sound wave (how close peaks/troughs are together) corresponds to the pitch. The higher the frequency/lower the wavelength (the closer the peaks/troughs are together), the higher the pitch.