Which mixture can create yellow-orange?

Correct answer: More yellow added to orange

The governing concept is the formation of a tertiary colour by adding a neighbouring primary colour to a secondary colour. Orange is made from red and yellow; adding more yellow shifts it toward yellow and produces yellow-orange. Therefore option B is correct. Yellow added to green produces yellow-green, red added to violet produces red-violet, and green added to blue moves toward blue-green, so those choices name different colour relationships.