In a process model, what is a common use for process variables?

Process variables are utilized within a process model to store data that can be accessed and used at various steps throughout the process. They serve as a dynamic repository for information that may be needed for decision-making, tracking, and transferring data between different parts of the process. By using process variables, developers can effectively manage data flow, ensure consistency, and allow for greater flexibility in process execution.

For instance, if a process requires user input or the results of a previous task to be used in successive tasks, process variables enable this transfer of information seamlessly. This capability is essential for maintaining the integrity and functionality of the process, ensuring that data is readily available where it is needed without requiring the data to be retrieved from external sources repeatedly.

The other options mentioned focus on different aspects of application management and do not pertain to the role of process variables. Configuring application settings relates more to system-wide configurations rather than task-specific data storage. Defining user roles or handling user permissions involves security and access management, which are distinct from the data flow and storage functions that process variables fulfill.