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Answer:</h2>
Use case diagram
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Explanation:</h2>
A use case diagram is one of the dynamic diagrams used in Unified Modelling Language (UML). It is used to illustrate the set of actions, services, tasks and functions that a system needs to perform and those to be performed on the system. Use case diagrams help team members of a project to identify the main functions or features of the system as well as users and external systems that will interact with the system.
Use case diagrams have the following features;
(i) System: to depict the application itself. It is represented using a rectangular box.
(ii) Use case: to represent the system's functionalities. It is represented using an oval shape.
(iii) Actors: to represent the users of the system.
(iv) Relationships: to illustrate the relations between the actors and the use case of the system.
Track Changes is a way for Microsoft Word to keep track of the changes you make to a document.To ignore all tracked changes in a document, you should select the Final option, on the Track Changes tab in the Review tab.
On the Review tab, use the little menus in the Tracking group. Final: Show Markup or Original: Show Markup will show what changes you have made.
