Color blindness is reduced ability to distinguish between certain colors. This disease is caused due to_______

The correct option is C

Defective gene

Color blindness is reduced ability to distinguish between certain colors. The affected person cannot differentiate between green and red light. This disease is caused due to defective gene copies present in their DNA. Thus color blindness is an example of genetic disorder. A genetic disorder is due to one or more abnormalities in the gene copies/genome and it could be right from birth (congenital), e.g. hemophilia, sickle cell anemia, Down's syndrome, etc.