Answer:

B

Explanation:

Amplitude is the height of a sound wave, measured from the midline to the peak. The higher the amplitude, the louder the sound.

Frequency is the number of waves that pass a point in a given amount of time. The higher the frequency, the higher the pitch of the sound.

Wavelength is the distance between two consecutive peaks of a wave. The longer the wavelength, the lower the pitch of the sound.

Period is the time it takes for one complete wave to pass a point. The longer the period, the lower the pitch of the sound.