How can lines help show depth in a drawing?

By showing receding lines closer together

Lines can create the visual impression that some objects are near while others are far away. In perspective drawing, parallel lines that move away from the viewer often appear to come closer together and may seem to meet at a distant vanishing point. The changing spacing and direction give the viewer clues about distance, size, and position. This is why lines are important tools for showing depth on a flat sheet of paper.

Option A is correct because showing receding lines closer together suggests distance and perspective. For example, the two sides of a road may look wider near the viewer and narrower farther away. Erasing all lines, writing names, or folding paper does not create this particular visual effect. The wording describes a common perspective device; more precisely, the lines usually converge toward a vanishing point rather than simply becoming close everywhere.

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