At night, we see primarily black and white and shades of gray, except near lights where some color is still evident. This is outward evidence of what internal anatomy?
A. The retina has a circadian rhythm.
B. The lens filters differentially the many wavelengths of light.
C. Cones detect the color of an object, and are activated by bright light.
D. There are more cones than rods and cones are very sensitive to light.
E. The vitreous humor filters much light, and daytime intensity is necessary to get colored light through to the retina.
Answer: C
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