Which of the following graphically depicts the movement of information within a system?

A site survey diagram documents the physical layout and radio signal coverage of a location, used primarily for wireless network planning rather than depicting information flow.

A data flow diagram uses standardized notation - arrows for data flows, circles for processes, rectangles for external entities, and open rectangles for data stores - to explicitly trace how information moves within a system. It is specifically designed to represent data movement, making it the correct choice among the options provided.

An architectural diagram depicts the structural components of a system and their static relationships, focusing on design and organization rather than the movement of data.

A network diagram illustrates network topology, hardware devices, and connectivity links, not the logical or procedural movement of information through a system.