If Viviane is unable to tell red from green, though she can see all other colors easily, then she is a dichromat.
To be dichromat is one of the types of color blindness. In this type of color blindness, the sufferer is unable to distinguish between the red and the green color. This occurs because there are some hues that they can not see.
Thus, if Viviane is unable to tell red from green, though she can see all other colors easily, then she is a dichromat.
Learn more about color blindness:https://brainly.com/question/25621649
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