Which shape in flowcharts is used to indicate a process?

In flowcharts, the rectangle is used to indicate a process or an operation. This shape signifies a step in the workflow, where an action or operation is performed. It is the most commonly used symbol in flowcharting to represent any kind of processing activity, such as calculations, data manipulation, or any functional operation that alters the flow of control.

The other shapes serve different purposes in flowcharting. The oval, for instance, typically represents the start or end of a process, indicating where the flowchart begins and concludes. The parallelogram is used to denote input or output operations, such as entering data or displaying results. The circle is generally used for connecting lines or indicating a continuation of flow on the diagram. Therefore, the rectangle is distinctly identified as the symbol for processes within flowcharts.