What contributes to unity in design?

Unity in design is achieved through the consistency that is created by the repetition of elements throughout a composition. When certain elements—such as colors, shapes, or textures—are repeated, they create a cohesive look that helps to tie the entire design together. This consistency not only enhances the visual appeal but also promotes a sense of harmony within the design, allowing viewers to easily navigate and connect with the different parts of the artwork or layout.

While contrasting elements, a dominant color scheme, and a single focal point can each play roles in creating interest and directing attention, they do not necessarily contribute to unity in the same way that repetition does. Contrasting elements can lead to visual tension rather than cohesion, a dominant color scheme may stand alone without integrating other components, and a single focal point can draw attention but might not unify the entire piece. Therefore, the repetition of elements provides a fundamental approach to achieving unity in a design, making it the correct answer.