The customer continuously prioritizes the backlog is the correct response. The team works through a prioritized list of items with the identifiable value provided by the customer. The other responses are incorrect. Agile teams know that
plans created at the beginning of the project are fluid and subject to change, so attempting to follow an early developed plan may not be feasible. The PMO (project management office) does not determine the progression of the project.
Lastly, the team leader doesn’t define the next iteration.