What is the main feature of the viewer’s experience in figure-ground reversal?

The viewer may read the object and the empty space alternately as the shape.

Figure-ground reversal is an ambiguous perceptual situation in which the relationship between positive form and surrounding negative space can switch. At one moment the viewer may perceive the object as the main figure; at another, the surrounding space may appear to form a meaningful shape, while the former figure becomes ground. Option B is correct because this alternating interpretation is the defining experience. Option A is too narrow, since the object can also be perceived. Option C is wrong because shapes can usually be identified, even if the reading is unstable, and option D ignores the change in perceptual organisation. Artists may use reversal to create visual puzzles, double meanings, or sustained attention.

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