What type of colour is orange generally considered?

Correct answer: Warm colour

Orange is a secondary colour produced by mixing red and yellow. Both red and yellow are conventionally classified as warm colours, and orange is placed with them because it suggests heat, energy, sunlight, and activity. Blue, green, and violet are commonly treated as cool colours, while neutral colours include white, grey, black, and similar low-hue tones. Orange is not colourless. Therefore option C is correct under the warm-and-cool colour classification.