Which colour group is a correct example of warm colours?

Correct answer: Red, yellow, orange

The correct answer is A: red, yellow, and orange are commonly classified as warm colours. Colour groups are often discussed by the feeling or visual association they suggest. Warm colours are linked with fire, sunlight, heat, activity, and energy, so red, yellow, and orange form the appropriate group here. A is correct because all three listed colours belong to the warm family. B is incorrect because blue and green are generally cool colours, and purple is often treated as cool or variable depending on its mixture. C and D are incorrect because black, white, and grey are neutral colours, while blue is not normally placed in the warm group. The classification describes visual effect, not actual temperature: a painted red area is not physically hot merely because it is called warm. A useful cue is to remember the colours of flame and sunlight—red, yellow, and orange.