Final answer:
D. Emphasis, contrast, and variety can be incorporated into different areas of a composition, including the introduction, main body, and conclusion.
Step-by-step explanation:
D. Emphasis, contrast, and variety are principles of composition that can be incorporated into different areas of a composition.
In the introduction, an artist may use emphasis to draw the viewer's attention to a specific element or idea. In the main body, contrast can be used to create visual interest and highlight important aspects. And in the conclusion, variety can be employed to create a sense of completion or resolution.