Which is a simple example of showing texture with lines?

Drawing rough lines on tree bark

The governing concept is implied texture: using marks and lines to make a surface look rough, smooth, hard, soft, or uneven. Tree bark is naturally irregular and rough, so short broken strokes with varied spacing, direction, and pressure can suggest its tactile quality. Option A is correct because the lines imitate the uneven surface of bark. Straight horizontal lines may suggest the direction or calm surface of water, but they usually communicate reflection or movement rather than rough texture. A uniform outline only shows an outer boundary, and leaving paper blank provides no line-based texture cue. Texture in drawing is an illusion created by selecting marks that resemble the visual pattern of a real surface.

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