Which term describes the arrangement or placement of image layers in a graphics program?

The term that accurately describes the arrangement or placement of image layers in a graphics program is "Stacking Order." This concept refers to the order in which layers are depicted in relation to one another when displayed. When multiple layers are utilized in graphics software, the stacking order dictates which layers are visible and how they overlap, affecting the final appearance of the composite image. Understanding the stacking order is crucial for effective graphic design as it allows designers to control what elements are on top and which are behind, ensuring the desired visual effect is achieved.

Other options like "Layer Order," "Layer Arrangement," or "Image Order" may refer to similar concepts but don't specifically capture the widely accepted terminology used in graphics programs to denote the layering hierarchy. Thus, "Stacking Order" is the most precise and commonly used term in this context.