Answer:
True
Step-by-step explanation:
In an activity diagram, a separate use case may be used as part of the workflow. An activity diagram is a type of behavior diagram in the Unified Modeling Language (UML) that shows the flow of control or the sequence of actions in a system or process. Use cases are also a part of the UML and describe the interactions between actors (users or external systems) and a system. It is common for activity diagrams to incorporate use cases as part of their workflow to show how different use cases interact with each other within the system.