Which mood will be strengthened by combination of warm colours and diagonal lines?

Correct answer: Energy and action

Answer: B, energy and action. Warm colours such as red, orange, and yellow are commonly associated with warmth, excitement, attention, and activity, although context can change their exact meaning. Diagonal lines suggest direction, movement, instability, or tension because they do not appear as settled as horizontal or vertical lines. When these two visual signals are combined, the viewer is likely to experience a more active and energetic mood. B is correct because it combines the usual emotional suggestion of warm colour with the movement suggested by diagonals. A and C are less suitable because rest, calmness, and stable balance are more often supported by quiet colours and horizontal or carefully arranged vertical forms. D is not the best answer because sadness and solitude are not the usual combined message of warm colour and diagonal movement. Memory cue: warm colour adds heat; diagonal line adds motion.