What diagram is used to show the functional location of components within a system?

The correct choice is a schematic diagram because it provides a detailed representation of the functional locations of components within a system. In a schematic diagram, various components such as resistors, capacitors, and integrated circuits are represented using standardized symbols, which allows technicians to understand how these elements are connected and interact functionally within the system. This type of diagram emphasizes the logical flow and behavior of the circuit or system, making it easier to analyze and troubleshoot.

While other diagrams such as flowcharts, pictorial diagrams, and block diagrams serve useful purposes, they do not emphasize functional locations as clearly as schematic diagrams do. For instance, flowcharts outline processes and decision points but do not depict component locations. Pictorial diagrams provide a visual representation of the setup but are not standardized for function. Block diagrams summarize the system's major blocks and their interconnections, but they lack the detailed information necessary to pinpoint specific components and their interactions. Thus, a schematic diagram is specifically designed for understanding functional relationships and component setups within electronic systems.