Orange is generally placed in which colour family?

Correct answer: Warm colour

The governing concept is the warm–cool classification of colours. Orange is a warm colour because it is made from red and yellow, and both are traditionally associated with warmth, sunlight, energy, and visual advance. Green, blue, and violet are commonly grouped as cool colours, while neutral and metallic describe other categories rather than orange’s usual family. Therefore option A is correct, although the perceived effect can also depend on surrounding colours and context.