Which connecting object in BPMN indicates the order of objects?

The connecting object in BPMN that indicates the order of objects is Sequence Flows. Sequence Flows are essential in a process model as they visually represent the progression of control from one activity or event to another. They illustrate how activities are connected in a sequence, showing the order in which they should be executed within the process. This helps in understanding the workflow and ensures that tasks are completed in the correct order.

In contrast, Message Flows are used to depict the communication between different participants or organizations in a process, and they do not indicate order. Associations are used to link artifacts or notes to flow objects but do not denote sequence. Event-Based Flows are used to represent decisions that are triggered by events, but again, they do not indicate a specific sequence of flow like Sequence Flows do. Thus, Sequence Flows are the definitive connecting objects for conveying the order of execution in BPMN.