Q.

Person who is colorblind cannot distinguish between –

A. Black and yellow
B. Red and green
C. Yellow and white
D. Green and blue
Answer» B. Red and green
Explanation: Color blindness is the decreased ability to see color or differences in color. The most common form of colour blindness is known as red/green colour blind-ness and most colour blind people suffer from this. Those affected have difficulty with discriminating red and green hues due to the absence or mutation of the red or green retinal photoreceptors.
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