What allows a user to run a new process from within a case?

The correct choice is that a user can run a new process from within a case through an optional process. Optional processes are designed to provide users the flexibility to invoke another process at specific points within a case without affecting the main workflow. They allow for branching of processes so that users can initiate tasks or subprocesses that may not be required for the completion of the primary case, thereby enhancing user experience and operational efficiency.

In contrast, local actions typically allow users to perform specific operations or actions directly related to the current case but do not initiate a new process. Case triggers are generally used to automatically initiate processes based on certain criteria or events within the case lifecycle, rather than allowing manual initiation by the user. User actions focus on interactions that users can take within the context of a case but do not inherently involve running new processes. Thus, optional processes serve the intended purpose of enabling users to run additional processes from within a case.