What can an edge do in a form?

Show the boundary between surfaces

Direct answer: A, an edge can show the boundary or meeting point between surfaces. In a solid form such as a cube, two faces meet along an edge. That edge helps us understand the object’s corners, planes, direction, and structure. In a drawing, an edge may be shown by a drawn line, a change from light to dark, a change of colour, or a contrast between the object and its background. It does not always have to be a thick outline; artists sometimes use a soft or lost edge when the surface turns gradually. Option A is correct because a boundary explains where one surface ends and another begins. Option B is wrong because an edge has no role in increasing paper’s smell. Option C is wrong because visual edges do not create sound. Option D is wrong because an edge does not automatically remove colour; colour may actually help make an edge visible. Common warning: an edge is not always the same as an outline.

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