How can sound or vibration be suggested through line in a picture?

Correct answer: Repeated wavy lines from a centre

Correct answer: A. Sound and vibration are not directly visible, so an artist can use symbolic or suggestive marks to make the viewer imagine them. Repeated wavy lines radiating from, surrounding, or moving away from a source can suggest vibration, sound waves, ringing, or trembling. A is correct because the repeated undulating movement gives a visual impression of energy spreading through space. B is wrong because a static square has no repeated movement or wave-like direction. C is wrong because empty space provides no visible sign of sound or vibration, although silence could be suggested in a different context. D is wrong because equal vertical bands generally communicate a static division rather than oscillation. The exact pattern may vary, but repetition and wave movement are the important clues. Memory cue: invisible vibration becomes visible through repeated moving marks.