What are the prospective modelling elements in a use case diagram?

In a use case diagram, the prospective modeling elements are crucial for depicting the system's functionality and the interactions between users and the system. The correct components include actors, use cases, and associations.

Actors represent entities that interact with the system. These can be users, other systems, or external entities that rely on the system to perform certain functions. They help identify the different roles that interact with the system.

Use cases describe the specific functionalities that the system provides, detailing what actions can be performed and under which circumstances. They encapsulate the requirements and serve as a bridge between the stakeholders and the technical team.

Associations illustrate the relationships between actors and use cases, indicating how actors interact with the various functionalities of the system. This connection helps clarify who is involved in each use case and the nature of their interaction.

This combination of actors, use cases, and associations effectively conveys the system's intended behavior and user interactions, making it a comprehensive representation in use case diagrams.