Western Governors University (WGU) ITSW 2113 D278 Scripting and Programming Foundations Practice Exam

The primary function of a class diagram in UML (Unified Modeling Language) is to provide a blueprint for creating objects. Class diagrams depict the structure of a system by showing the system's classes, their attributes, methods, and the relationships among the classes. This enables developers to understand the object's properties and behaviors, and how these objects interact with each other. By laying out the classes and their interconnections clearly, a class diagram serves as a foundational design tool in object-oriented programming, guiding developers in implementing the architecture of an application.

Other options, while relevant to different aspects of UML:

- The modeling of algorithm flows is typically done through activity diagrams or sequence diagrams, rather than class diagrams.

- Visualizing events in a sequence pertains to sequence diagrams, which outline how processes interact over time rather than the static structure of a system.

- Illustrating user interactions is often represented in use case diagrams, focusing on how users will engage with the system, rather than the underlying class structure.

Thus, the correct choice emphasizes the fundamental purpose of class diagrams in representing the architecture and blueprint for object creation within a system.