What best describes the wavelengths with optimal perception in individuals with normal color vision?

The wavelengths with optimal perception in individuals with normal color vision are those that align with the three types of cone photoreceptors in the retina, which are sensitive to specific ranges of wavelengths. Individuals with normal color vision have the ability to discriminate between a variety of wavelengths, but they are particularly adept at distinguishing certain selective wavelengths where the cone sensitivities peak.

These selective wavelengths correspond to the peak sensitivities of the short (S), medium (M), and long (L) wavelength-sensitive cones. The M and L cones are most effective at perceiving green and red wavelengths, respectively, while S cones are more sensitive to blue wavelengths. This allows individuals with normal color vision to perceive a broad spectrum of colors while having the most acute discrimination ability at those specific peaks.

The other options do not accurately describe how color perception works in normal vision. For example, the idea that all wavelengths are equally perceived neglects the selective nature of the photoreceptors. Similarly, the notion that some wavelengths are indistinguishable contradicts the ability to perceive a range of colors due to differential cone sensitivity. Finally, although wavelengths beyond 700 nm, which are in the infrared range, are typically not perceived by human vision, this aspect alone doesn't represent the rich capacity for