When taking photos for your social channels (e.g., Instagram) you can add depth, by using roads, buildings, or bridges to create a pathway that leads the viewer’s eye to a single spot. This is best described as:

Leading lines are a compositional technique where natural or artificial lines within an image (like roads, fences, or architectural elements) guide the viewer's eye towards a specific point of interest, creating a sense of depth and direction. This technique effectively draws the audience into the photograph and highlights the subject. 3D Technique is too broad and doesn't specifically describe the use of lines for eye guidance. Planar scaling refers to the perception of distance based on the relative size of objects on a flat surface, not the use of lines to guide the eye. Depth illusion is a general term for creating a sense of depth, but "leading lines" is the specific technique described. Grid planing is a method for organizing elements within a frame using a grid, not for guiding the eye with lines.