Which colours are mixed to prepare blue-violet?

Correct answer: Blue and violet

Blue-violet is a tertiary colour made by mixing the primary colour blue with the adjacent secondary colour violet on the colour wheel. Therefore, option A is correct. Green and yellow produce yellow-green, red and orange produce red-orange, and yellow and orange produce yellow-orange. The word order in the colour name is not a random label: it indicates the neighbouring primary and secondary colours that are combined to create the intermediate hue.