What is the relation between line movement and brush movement?

Correct answer: Brush movement affects character and energy of line

A brush does not merely place paint on a surface; the movement of the hand and tool gives the line its visual character. A quick stroke may look lively, energetic, sharp, or spontaneous, while a slow and controlled stroke may look calm, heavy, careful, or deliberate. Changes in pressure, direction, and speed can also alter the line’s thickness and rhythm. Thus, line movement and brush movement are closely connected in painting and drawing.

Option A is correct because the brush’s speed and movement influence the character and energy of the line. Option B is incorrect because the tool’s movement clearly affects the mark it makes. Option C is incorrect because lines do not always remain identical when the brush action changes. Option D is incorrect because changing brush speed does not automatically change the medium; it changes how the medium is applied. The hand and tool together create the line’s expression.