Which example contains both temperature contrast and value contrast?

Correct answer: Light yellow-orange and dark blue-violet

Temperature contrast compares warm and cool tendencies, while value contrast compares lightness and darkness. In option D, light yellow-orange is warm and light, whereas dark blue-violet is cool and dark. Thus both kinds of contrast operate at once. The other pairs are either close in temperature, close in value, or lack a clear light-dark difference, so they do not satisfy both conditions as strongly.