Which process model notation uses rule objects like "AND," "OR," and "Exclusive OR"?

The correct answer is the Event-driven process chain (EPC). EPC is a popular business process modeling notation that allows for the use of logical operators such as "AND," "OR," and "Exclusive OR." These rule objects help to define the flow of processes in a way that expresses how different paths can be taken based on certain conditions or events occurring.

Using these logical operators enhances the clarity of a model by indicating decision points within a process, thus providing a comprehensive view of how various tasks interconnect and the pathways that can be taken based on specific criteria. This capability is essential in business process modeling as it reflects the decision-making logic commonly found in real-world processes.

In contrast, while flow charts may incorporate simple decision points, they do not utilize specific rule objects like those found in EPC. The Unified Modeling Language (UML) is primarily concerned with software engineering and object-oriented modeling, lacking the specific focus on rule objects used for business processes. Integrated DEFinition Methods (IDEF) encompasses a range of modeling techniques but does not specifically emphasize the logical operators mentioned in the question. Thus, EPC stands out as the notation that effectively integrates the use of "AND," "OR," and "Exclusive OR" in the context of process modeling.