What generally happens when black is added to green?

Correct answer: Green will become darker

Adding black generally lowers the value or lightness of green, so the green appears darker. In art terminology, a darker version of a hue made by adding black is called a shade. White would make green lighter and create a tint, so option A gives the opposite effect. Adding black does not turn green into orange, and it cannot change a secondary colour into a primary colour. Thus, option B is correct.