Multiple choice general knowledge

8 to 10% of all males have some form of colorblindness. This is a good reason to avoid color schemes that include:

  1. red on green

  2. black on white

  3. blue on yellow

  4. green on white

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A Correct answer
Explanation

Red-green color blindness (deuteranopia/protanopia) is the most common form, affecting about 8% of males. Red-green combinations are difficult for these users to distinguish, making such color schemes inaccessible.