I.B.2

[pkdash]

// Study task: I:B.2 Classify specific conditions under their relevant disability category or categories

// Sources:
// The [Certified Professional in Accessibility Core Competencies Body of Knowledge](https://iaap.membershipsoftware.org/files/IAAP%20CPACC%20BOK%202017_062317.docx)

Which of the followings describes the characteristics of color blindness?
{
  =Color blindness affect an individual's ability to distinguish reds and greens
  ~Color blindness affect an individual's ability to distinguish reds and blues
  ~Color blindness affect an individual's ability to distinguish greens and blues
  ~Color blindness affect an individual's ability to see any color
}

[robfentress]

Thanks for submitting a question! I think this one may need tweaking though. Color blindness can, in very rare circumstances, affect an individual's ability to distinguish between any colors (achromatopsia), and those with protanopia can have difficulty distinguishing between some reds and some blues. Also, those with tritanopia and tritanomaly can have difficulty distinguishing between blue and green. Basically, all of those answers could be correct, as regards color blindness, depending on the type they have.

[pkdash]

Can we re-frame the question like this?
Which of the followings describes the most common characteristics of color blindness?

[robfentress]

How about this?

// Study task: I:B.2 Classify specific conditions under their relevant disability category or categories

// Sources:
// The [Certified Professional in Accessibility Core Competencies Body of Knowledge](https://iaap.membershipsoftware.org/files/IAAP%20CPACC%20BOK%202017_062317.docx)
// The Wikipedia entry on [Achromatopsia](https://en.wikipedia.org/wiki/Achromatopsia)
// [Types of Colour Blindness](http://www.colourblindawareness.org/colour-blindness/types-of-colour-blindness/)
// The [Blue-yellow color blindness section](https://en.wikipedia.org/wiki/Color_blindness#Blue-yellow_color_blindness) of the Wikipedia article on Color Blindness

Which of the following is the most common deficit in people with color blindness?
{
  =Difficulty distinguishing between reds and greens
  ~Difficulty distinguishing between reds and blues
  ~Difficulty distinguishing between greens and blues
  ~An inability to distinguish between any colors
}