Which object in BPMN can be used to store any output data generated by a process?

The correct choice is a data store entity, as it specifically functions to store any output data generated by a process in BPMN (Business Process Model and Notation). Data store entities are designed to hold information that can be accessed and used across different parts of a process or by different processes entirely. This makes them ideal for situations where data needs to persist beyond the duration of a specific process execution.

In BPMN, data store entities serve as repositories for both input and output data, facilitating data management and retrieval. They ensure that relevant information is available when needed, which is crucial for business processes that rely on historical data or complex data manipulation.

While data objects represent actual data that flows through the process and data flows describe the movement of data between objects, they do not serve the purpose of long-term storage like a data store entity does. Subprocesses, on the other hand, are used to encapsulate a set of tasks but do not inherently function to store data. Instead, they can reference data objects or data stores during their execution. Thus, a data store entity is the most appropriate and accurate choice for storing output data generated by a process.