What does an Association in BPMN link together?

An Association in BPMN is used to connect Supporting artifacts such as attachments to flow objects, providing additional context and information that is related to the elements in the process diagram. This linkage helps clarify how text, images, or other documentation support the flow of the business process.

In BPMN, Associations are visually represented as a dashed line and serve primarily to illustrate relationships that do not affect the flow of the process. They help in enriching the model by adding details without altering the actual sequence or execution of the process.

Other choices reflect relationships that are typically represented through different types of connections, such as sequences or message flows. For example, flow objects and gateways indicate control flow, while activities and subprocesses reflect elements of the process itself, thus having distinct functions in BPMN that do not align with the purpose of Associations.