Why is it incorrect to place orange between yellow and blue on the colour wheel?

Correct answer: Because orange is made by mixing red and yellow

The governing concept is the arrangement of secondary colours on the colour wheel. Orange is formed from the primary colours red and yellow, so it is placed between those two parent colours. Yellow and blue have green between them because green is their mixture. Option B describes violet, not orange; C wrongly calls orange primary; and D is false because orange is part of the wheel. Thus A is correct.