Correct Option: C

Colour vision deficiency, commonly called colour blindness, results from a malfunction or absence of cone cells in the retina.Cone cellsare one of three types of photoreceptor cells in the retina of the human eye that are responsible for colour vision and function best in relatively bright light. Colour blindness can occur when one or more of the colour cone cells are absent, nonfunctioning, or detect a different colour than normal.