In design terminology, what does "emphasis" refer to?

Emphasis in design terminology refers to the focal point in a design. It is the element that draws the viewer's attention and serves as the main attraction within the composition. By using emphasis, designers can guide viewers through the visual hierarchy of the piece, highlighting what is most important, whether it’s through the use of color, size, contrast, or placement. This focal point can create a sense of interest and helps to convey a specific message or theme in the design.

Each of the other choices addresses different concepts within design. A gradual change in size or color pertains to a principle known as gradation, which affects the flow and transition within a design but does not necessarily identify a focal point. The unity of design elements refers to how parts of the design work together cohesively. Meanwhile, the method of creating harmony involves ensuring that various elements complement each other, leading to a balanced design. While these aspects play important roles in overall design, they do not specifically define what "emphasis" means.