Final answer:
Creating flowcharts, swimlane diagrams, activity diagrams, or use cases is the most appropriate business process automation technique to develop a package solution project.
Step-by-step explanation:
The most appropriate business process automation technique that should be used to help develop a package solution project is to create flowcharts, swimlane diagrams, activity diagrams, or use cases to show how users currently perform tasks and how they will perform them after automation.