In the retina of the human eye, long (L), medium (M), and short (S) cone cells help process bright light and color by sending signals to the brain. M cones react to a range in the visible spectrum of light that completely overlaps with those L and S cones react to. As a result,
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hardWhich choice most logically completes the text?
A
it is possible to study the roles of L, M, and S cones because each type of cone can be activated without activating the other types.
B
L cones react only to wavelengths associated with the color red, S cones react only to wavelengths associated with the color blue, and M cones react only to wavelengths associated with the color green.
C
it is difficult to exclusively study the role of M cones in human vision under natural conditions because M cones can’t be activated without simultaneously activating the L and S cones.
D
the brain more easily interprets colors in the range that both L and S cones react to than in the range that M cones react to.