When a program has several modules calling other modules, programmers often use a program , which operates similarly to an organizational chart, to show the overall picture of how modules are related to one another.

hierarchy chart

Explanation:

Based on the information provided within the question it can be said that in this scenario programmers usually use a hierarchy chart. This is a chart that shows the relationship that exists between various different modules that are able to call on another. Therefore showing the programmers the organization of the entire overall program.

whats the answer to this question