What technique is utilized in forced perspective in art and architecture?

Forced perspective is a technique primarily used in art and architecture to manipulate the viewer's perception of depth and scale. By arranging objects or architectural elements in a way that they appear smaller or larger than they actually are, artists and architects can create an illusion that enhances the spatial experience. This method often involves altering the size and placement of objects in relation to one another, as well as the viewer's position, effectively leading to an impression of greater depth than what exists in reality.

In contrast, other techniques listed, such as use of exaggerated colors, elimination of background details, or focus on symmetrical balance, do not specifically contribute to the illusion of depth in the same way that forced perspective does. These techniques might enhance visual appeal or create harmony but do not fundamentally alter the perceived spatial relationships between objects in the environment.