Final answer:
In art, a closed composition keeps the viewer's attention within the boundaries of the frame, whereas an open composition leads the eye to move beyond the frame, suggesting a continuation of the scene.
Step-by-step explanation:
The difference between an open and closed composition in art refers to the framing and containment of elements within the artwork. In a closed composition, the elements are arranged in a way that the viewer's eye is kept within the boundaries of the image - the action and figures are contained within the frame, often creating a formal and structured feeling. Conversely, in an open composition, the elements can lead the viewer's eye beyond the frame, making the scene feel as if it continues outside the canvas, giving a sense of freedom and continuation.