Final answer:
Different colors of light have slightly different wavelengths. When white light is passed through a prism, it is separated into its component colors due to the different wavelengths of light bending differently.
Step-by-step explanation:
The correct answer is a) Wavelengths. Different colors of light have slightly different wavelengths. In the spectrum of visible light, each color corresponds to a particular frequency and wavelength. When white light is passed through a prism, it is separated into its component colors due to the different wavelengths of light bending differently.