Marco is conducting an experiment. He knows the wave that he is working with has a wavelength of 32.4 cm. If he measures the frequency as 3 hertz, which statement about the wave is accurate?

A wave traveling at 3 hertz completes 3 cycles each second. Each cycle covers one wavelength, or 32.4 cm, so its speed is 3 × 32.4 = 97.2 cm per second. Therefore, the wave travels 97.2 cm in 1 second, which is choice D.

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