Answer:
to help the viewer's eye travel from one area to another
Step-by-step explanation:
When we speak of movement, of image, we immediately think of a film, of a cheerful television program, which is also not wrong.
The movement, since the most remote times, when there were no films or television, was present in fixed images, through art (painting, sculpture or architecture).
Artists have always felt the need to communicate sensations of movement in their works, using certain visual details. In fact, we need to remember that it is the immobile, inert material that a canvas, wood or marble gains in the artist's hands, the sensation of movement.
This movement is placed in artwork as a strategy to help the viewer's eyes to travel from one area to another.