Where will blue-green appear on the colour wheel?

Correct answer: Between green and blue

The relevant concept is the placement of a tertiary colour between its two component neighbours. Blue-green is made by mixing blue with green, so it appears in the section between green and blue; option B is correct. Red-orange belongs between red and orange, yellow-orange between yellow and orange, and red-violet between red and violet. Thus each alternative describes a different region of the colour wheel.