Color blindness occurs when a person doesn't have one or more types of cones. Based on the simulation, if a person didn't have red cones, how would their perception of color change?

When the cones have all the various pigments (called photo pigments),your eye sees all possible colors. If there's a problem with the pigments, you won't see colors the way you should. This is called color deficiency or color blindness

Explanation: i use edmentum, this is the right answer :)

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either two or three