Why are gesture lines highly valuable in figure drawing?

They quickly capture pose and movement of the figure

The governing concept is gesture drawing, a rapid structural study of action, balance, and direction. Gesture lines are loose, economical marks that trace the main flow of the spine, the tilt of the shoulders and pelvis, and the movement through the limbs. They help an artist capture the pose before details, clothing, anatomy, or shading slow the process. Thus option A is correct because gesture lines quickly communicate both posture and movement. Option B concerns colour, which is not the purpose of gesture marks. Option C refers to framing and has no necessary connection with figure action. Option D is too absolute and incorrect; gesture lines do not always hide anatomy, and they may later support accurate anatomical construction.

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