If a yellow-orange sample appears more orange than expected after drying, what is the correct way to balance it toward yellow?

Correct answer: Add a little yellow

The governing colour-mixing principle is to make a small adjustment using the hue toward which the mixture must move. Because the dried sample is too orange, adding a controlled amount of yellow shifts the yellow-to-orange balance toward yellow. Option A is correct; blue or green can introduce an unwanted cool or neighbouring bias, while black mainly lowers value and may make the colour dull rather than correct its hue.