Who should know the most about the progress toward a business objective or a release, and be able to explain the alternatives most clearly?

Who should know the most about the progress toward a business objectiv

1.	Who should know the most about the progress toward a business objective or a release, and be able to explain the alternatives most clearly?
Answer» This is the task of the Product Owner. The Product Owner is the sole PERSON responsible for managing the Product Backlog, which includes that the Product Backlog is visible, transparent, and clear to all, and shows what the Scrum Team will work on next. The responsibility of achieving maximum business VALUE for the PROJECT lies primarily with the Product Owner. The PO is also responsible for maintaining business justification for the project and articulating customer requirements. A PO represents the VOICE of the customer.