Final answer:
The relationship between elements in a design is important for creating unity and variety. Proximity is the principle that elements that are closer together in a design are thought to be one unit. Organizing elements by color and shape can create a sense of unity and variety in an artwork.
Step-by-step explanation:
The relationship between elements in a design is important for creating unity and variety. Elements that are closer together in a design are thought to be one unit, which is known as proximity. By organizing elements by color and shape, artists can create a sense of unity and variety in their work.