Which of the following elements is NOT part of a film's mise en scene?

Mise en scène refers to everything that appears before the camera and its arrangement—the visual elements that combine to make the world of the film. It encompasses a variety of components, including set design, props, costumes, and lighting, all contributing to the overall visual style and atmosphere of a film.

Cinematography, while closely related to how a film looks, is primarily concerned with the camera work and the way scenes are captured and framed. This includes shot composition, camera angles, and movement, which are distinct from the idea of mise en scène, as they are not solely about what is on the screen but how it is recorded.

Editing is also an essential film component but deals with the post-production process of selecting and combining shots to create a coherent narrative. This aspect focuses more on the pacing and flow of the film rather than the visual composition that mise en scène emphasizes.

Therefore, the choice that correctly identifies an element that is not part of a film's mise en scène is the one related to editing since it occurs after the mise en scène elements are established and is more about the assembly and timing than the visual arrangement of the film's world.