Complete color blindness results in a perception of the world only in black and white and is a result of
a. cones that are missing or function abnormally.
b. rods that fail to function under higher levels of illumination.
c. excessive pigmentation of the cornea.
d. a lens that has lost its elasticity and can no longer focus the image appropriately on the retina.
ANSWER: a
Psychology
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Indicate whether this statement is true or false.
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