01 Which secondary colour is useful for showing the glow of a sunset?
Answer and explanation
Correct answer: C. Orange
Explanation: The governing concept is colour symbolism and warm-colour use in an artwork. Orange is a secondary colour formed by mixing red and yellow, and its warm, bright appearance can suggest the glowing light of a sunset. Green is linked more strongly with vegetation, violet with cool mystery or shadow, and grey with muted atmosphere. These colours may appear in a complete sunset scene, but orange is the best choice for its warm glow. Therefore, option C is correct.