Final answer:
The sprint backlog in agile project management is flexible to some extent, allowing for negotiation between the Development Team and Product Owner based on new information or impediments during the sprint.
Step-by-step explanation:
In agile project management, the sprint backlog is a collection of items selected for implementation in an upcoming sprint. The primary goal of the sprint is to work through this set of items. According to the Scrum framework, which is a form of agile methodology, the sprint backlog is intended to be flexible to a degree during a sprint. The correct statement regarding changes to the sprint backlog during a sprint is not among the options provided in the question as the Scrum Guide allows the Development Team to negotiate with the Product Owner about the scope of the sprint if more is learned about the work needed to achieve the sprint goal or if there are blockers that prevent certain work from being completed.