Which correctly explains the relation between line and shape?

A line can close to form the boundary of a shape

The governing concept is the relationship between two elements of art: line and shape. A line marks a path or boundary, and when it encloses an area by meeting or closing back on itself, it can define the boundary of a two-dimensional shape such as a circle, triangle, or irregular leaf. Option A is correct because the closed line separates the inside area from the surrounding space. A line does not always end or destroy a shape; it may construct, divide, or describe it. Shape is a visual area, not something made only by sound, and line and shape are closely related rather than unrelated. In practice, a shape may also be created by colour or a change in tone, but a closed contour is the clearest basic example of line forming shape.

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