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What characteristic is associated with a long wavelength?

  1. High intensity

  2. Low frequency

  3. High melanin absorption

  4. High frequency

The correct answer is: Low frequency

A high intensity is associated with a short wavelength, while a low frequency is associated with a long wavelength. High melanin absorption is not a characteristic associated with a wavelength, as it is a measure of how much light is absorbed by melanin in the skin. Lastly, high frequency is also not associated with a long wavelength as high frequency waves have shorter wavelengths.