Which process model notation is maintained by the Object Management Group (OMG)?

The correct answer is UML (Unified Modeling Language) because it is indeed maintained by the Object Management Group (OMG). UML is a comprehensive modeling language that provides a standard way to visualize the design of a system. It is widely used for specifying, visualizing, constructing, and documenting the artifacts of software systems, particularly in object-oriented programming.

UML consists of various diagram types that help in depicting different aspects of a system, including structure, behavior, interactions, and more. Its maintenance by OMG ensures that it adheres to structured standards and evolves with technological advancements.

In contrast, the other process model notations mentioned have different governance and purposes. EPC (Event-driven Process Chain) is not maintained by OMG but is specific to business process modeling. BPMN (Business Process Model and Notation) is also a standardized method for business process modeling but is maintained by the Object Management Group under a different capacity. Flow charts are a basic visual representation technique for processes but do not have formal maintenance or governance by OMG.