ANSWER:
C. Columns A and B
STEP-BY-STEP EXPLANATION:
Quantitative variables are any variables in which the data represents quantities, such as height, weight, or age. Categorical variables are any variables where the data represents groups.
Therefore, in this case, only the hair color and the favorite subject are representative variables, that is, columns A and B.
This means that the correct answer is C. Columns A and B
