The best differentiation between long wavelengths and short wavelengths is that long wavelengths have low frequency, while short wavelengths have high frequency. This relationship is fundamental in understanding wave behavior in physics. Visibility does not define these wavelengths distinctly as some long and short wavelengths can both be invisible. ;
The correct answer is option A: Long wavelengths have low frequency; short wavelengths have high frequency. This is a fundamental concept in physics, illustrating the inverse relationship between wavelength and frequency. Furthermore, visibility does not solely define these wavelengths, as both types encompass visible and invisible light.
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