Final answer:
When a Development Team selects a set of Product Backlog items for a Sprint Backlog, 'done' means that the selected items have been fully completed and meet certain criteria.
Step-by-step explanation:
When a Development Team selects a set of Product Backlog items for a Sprint Backlog, 'done' means that the selected items have been fully completed and meet certain criteria. These criteria can vary depending on the specific project or team, but generally, it means that the work has been thoroughly tested, meets the acceptance criteria, and is in a releasable state.
For example, in software development, being 'done' could mean that a feature or user story has been implemented, tested, and documented. It may also involve meeting performance benchmarks, security requirements, and compatibility with other components.