Which colours are mixed to make green?

Correct answer: Yellow and blue

In the traditional colour-mixing model used in basic art education, yellow and blue are primary colours that combine to form the secondary colour green. Therefore option B is correct. Red plus blue produces violet, and red plus yellow produces orange. Orange plus red is not the standard pair of primary colours for creating green. The answer follows the colour-wheel rule that each secondary colour comes from a particular pair of primary colours.