Which items can be classified as artifacts in BPMN?

In BPMN (Business Process Model and Notation), artifacts are additional elements that provide more context and information about the process without affecting its flow. The correct classification includes items that contribute supplemental information to a model, helping clarify the process without altering its execution.

Data objects serve as a representation of the data that can be used or produced during the execution of a process. They provide insight into what information is required or generated, thus fulfilling the role of an artifact that supports the understanding of the process. Annotations, on the other hand, are explanatory notes that can be added to the diagram. They are used to convey details that may not be captured through the standard elements of the process, effectively providing context to viewers who may be reviewing the BPMN diagram.

Considering these definitions, data objects and annotations collectively fall under the category of artifacts because they offer additional insights that enhance the model's clarity without impacting the flow of the process itself. This focus on providing a more comprehensive understanding of the process is key in classifying them appropriately as artifacts within BPMN.