In which condition will it be necessary to keep the shape boundary clear?

When a symbol must be recognized quickly

A clear boundary is especially important when a shape functions as a symbol that must be recognized quickly. A symbol communicates an idea through a simple, readable form, so its outline should be distinct from nearby shapes or the background. Strong boundaries help the viewer identify the sign without spending much time interpreting it. This is useful in visual communication and design.

Smoke and mist are usually shown with soft, broken, or unclear edges because their appearance is diffuse. If an artist wants a shape to look intentionally unclear, a sharp boundary would work against that purpose. Changing the frame also does not make the symbol itself easier to recognize. Therefore, option A is correct: quick recognition requires a boundary that clearly separates the symbol from its surroundings.

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