Which option can make shape rhythm predictable but dull for the viewer?

Repeating the same shape, size, and spacing without variation

Shape rhythm is governed by repeated visual units and the pattern created as the eye moves through them. Repetition provides order, but rhythm usually remains engaging when it includes controlled changes in size, interval, direction, or detail. Option A is correct because repeating exactly the same shape at the same size and with identical spacing produces mechanical regularity; after the pattern is recognized, the viewer has little visual surprise. Option B adds variation, option C gives the rhythm a compositional purpose by directing attention, and option D introduces a small change in interval. These choices can preserve unity while avoiding monotony. Thus the problem is not repetition itself, but repetition without meaningful variation.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Shape.