Final answer:
A hierarchy chart is used by programmers to visualize the relationship between modules, showing how each module is related to others and providing an overview of the system's structure. Flowcharts are different and are mainly for processes rather than module relationships.
Step-by-step explanation:
A programmer would use a hierarchy chart to visualize the relationship between modules. A hierarchy chart, also known as a structure chart, is a diagram representing the structure of a system, illustrating the various modules and the relationships among them. These charts provide a convenient way of showing how each module is related to others and how the overall program is organized.
Flowcharts are more typically used to depict algorithms or processes by detailing the steps required to complete a task and the flow of control from one step to another. Pseudo charts are not a recognized standard tool, and modular charts do not specifically refer to a type of diagram used for visualizing modules and their relationships.