Flowcharts are used to

A) summarize large amounts of statistical data.
B) show the relative sizes of the parts of a whole.
C) show how something looks or operates.
D) illustrate processes and procedures.

Flowcharts are commonly used to illustrate processes and procedures. They provide a visual representation of a series of steps or actions, making complex systems easier to understand and follow. While flowcharts could potentially be used to summarize statistical data, they are not typically used for this purpose. Showing the relative sizes of parts of a whole is better suited to charts such as pie charts or tree diagrams. Flowcharts may include some visual representation of how something looks or operates, but their primary purpose is to illustrate processes and procedures.