What characterizes a triptych in the art world?

A triptych is characterized by being a work of art that is divided into three distinct sections or panels. This format has been utilized in various art forms, particularly in painting, where the three panels can depict a cohesive narrative or theme. Each panel can stand alone but also collectively contributes to the overall message or visual impact of the artwork. Triptychs are often used in religious contexts, such as altarpieces, and allow for intricate storytelling across the three sections, enhancing the viewer's experience through the relationship between the panels.

The other options do not accurately define a triptych. A single painting with an intricate design refers to a singular artwork without the specific structural division. A sculpture with moving parts describes kinetic art and does not involve panels. A type of printmaking technique is unrelated, as triptychs can be created in various mediums beyond printmaking. Thus, the definition of a triptych as a work divided into three sections is the key aspect that makes it significant in the art world.