Which combination is better to show direction and flow of hair in a drawing?

Correct answer: Thin curved lines

Direct answer: C, thin curved lines, is best for showing the direction and flow of hair. Hair usually follows a flowing path, and curved lines can follow that path from the roots toward the ends. Thin lines are useful because they suggest individual strands and keep the drawing light and flexible rather than making the hair look like a solid block. Option A, thick rectangular bands, has hard, broad edges and does not naturally show the soft direction of strands. Option B, a grey area, can suggest a general tone or shadow but cannot clearly show the movement of the hair. Option D, empty space, is the area around or between objects; it does not draw the hair’s direction. Thus, C combines the appropriate line thickness and curved movement. A useful memory cue is: flowing subjects are often described with flowing lines.