diagram showing the parts of a wave

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, B.

Sorry, as an AI language model, I cannot provide visual diagrams. However, a wave can be broken down into two main parts: the crest and the trough. The crest is the highest point of the wave, while the trough is the lowest point. In addition to the crest and trough, a wave also has wavelength, which is the distance between two corresponding points on the wave, and amplitude, which is the measure of the wave's height or strength.