Respuesta :

D represents the wavelength in your problem. The wavelength is the measurement between two crests and can be measured on the bottom crest or the top crest.

Answer: Letter D represents the wavelength of the wave.

Explanation: We are given a wave in the image. Wave comprises of crests and troughs.

Wavelength of a wave is defined as the distance between the two crests or two troughs or one crest and one trough.

And here letter D is the distance between the two troughs. Hence, this indicates the wavelength of the wave.

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