select the correct answer. which of these parameters is directly related to sound frequency? a. wavelength…

Answer:

D. sound pitch

Brief Explanations:

Sound pitch is directly related to frequency. Higher - frequency sounds have a higher pitch, and lower - frequency sounds have a lower pitch. Wavelength and wave velocity are related to frequency through the wave equation ($v = f\lambda$), but not directly in the sense of perception like pitch. Sound intensity is related to the energy of the sound wave, and wave amplitude is related to the loudness, not directly to frequency in terms of the characteristic of pitch.