Which principle allows the eye to follow implied lines based on alignment?

The principle that allows the eye to follow implied lines based on alignment is continuity. This principle is rooted in the Gestalt psychology which suggests that elements that are aligned or arranged in a certain way create a flow that the viewer's eye naturally follows. When elements are placed in a way that suggests a path or direction—whether through curves, lines, or arranged shapes—the viewer's perception connects them, guiding their gaze and creating a sense of movement through the design.

Continuity emphasizes smooth transitions and connections between elements, making it crucial in creating a cohesive design that feels harmonious and intentional. This principle helps to establish relationships between the components of a design, enhancing the overall user experience by leading the viewer’s attention in a deliberate direction.