In which example is rhythm used to lead the viewer toward a specific focal point?

Correct answer: Shapes gradually become smaller toward the centre

The governing concept is directional rhythm: repeated elements can create a visual route for the eye. If shapes become progressively smaller while moving toward the centre, their sequence establishes direction and guides attention to that focal point. Thus option A is correct. Scattered shapes have no consistent path, one colour alone does not create directional rhythm, and an isolated edge shape may attract attention but does not demonstrate a rhythmic route.