Aperceived increase in the volume of sound is best explained by
a. an increase in the height of the sound waveb. an increase in the width of the sound wavec. a combination of multiple sound wavesd. a decrease in the width of the sound wave

option A - an increase in the height of the sound wave

Explanation:

Loud sounds are carried by waves that have a higher amplitude (height between peak and trough) than quiet sounds. The bigger the amplitude of a sound wave, the louder it sounds to our ears.

So, the perceived increase in the volume of sound is best explained by an increase in the height of the sound wave

A

Explanation:

Volume is synonymous to amplitude. Amplitude of a sound wave is the height of the wave from rest

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hope that !         : )