A. They can be used to discover parallel activities
B. They are used to depict workflow for a particular business activity
C. Activity diagram do not tell who does what and are difficult to trace back to object models
D. All of the mentioned
✅ The correct answer is option D.
Explanation: Activity diagrams are graphical representations of workflows of step wise activities and actions with support for choice, iteration and concurrency.
Explanation: Activity diagrams are graphical representations of workflows of step wise activities and actions with support for choice, iteration and concurrency.