If a painter has only red, yellow and blue, which colour can be made directly by mixing them?

Correct answer: Orange

With a traditional paint set of red, yellow and blue, the painter can directly create orange by mixing red and yellow. Orange is a secondary colour produced from two primary pigments, so option D is correct. White is generally not obtained by pigment mixing, gold requires a special pigment or effect, and black is not the standard school result intended by this particular pair of primary colours.