Why would a business analyst consider developing an activity diagram?

Developing an activity diagram is particularly relevant for demonstrating how a system might allow a user to interact with it and the tasks that it must perform. An activity diagram is a type of flowchart that visualizes the flow of control or data within a system, making it easier to understand the various actions and decisions involved in a process.

This diagram effectively showcases the sequence of activities, decisions, and interactions that a user might engage in while working within the system. By representing the tasks that need to be performed and the order in which they occur, the activity diagram emphasizes user interactions and system responsibilities, allowing stakeholders to grasp both the functional requirements and process dynamics more clearly.