A Product Backlog item is considered complete when it meets the Definition of Done, as stated in [5]: "When a Product Backlog item or an Increment is described as "Done", everyone must understand what "Done" means. Although this varies significantly per Scrum Team, members must have a shared understanding of what it means for work to be complete, to ensure transparency. This is the definition of "Done" for the Scrum Team and is used to assess when work is complete on the product Increment."

According to the Scrum Guide, the Product Owner has the final say on the order of the Product Backlog, as he or she is responsible for maximizing the value of the product and the work of the Development Team. The other roles do not have this authority, although they may provide input and suggestions to the Product Owner.

The correct answer is C because Sprint Planning is timeboxed to a maximum of eight hours for a one-month Sprint. For shorter Sprints, the event is usually shorter. This timebox is defined in the Scrum Guide and helps ensure that planning is focused, efficient, and proportionate to the length of the Sprint.
Sprint Planning starts the Sprint by setting a clear direction for the work ahead. During this event, the Scrum Team discusses why the Sprint is valuable, what can be done during the Sprint, and how the chosen work will be accomplished. The outcome is the Sprint Goal, the selected Product Backlog items, and the initial Sprint Backlog plan.
Option A is incorrect because four hours is not the Scrum Guide's timebox for a one-month Sprint. Option B is incorrect because "monthly" is not a valid timebox length for the event itself. Option D is incorrect because Scrum events are always timeboxed to promote discipline and effectiveness.
This timebox matters because Scrum encourages enough planning to begin effectively, but not so much that excessive discussion delays value delivery. The purpose is to create clarity and alignment while still preserving agility and adaptability.

The best two answers are A and B. As a Scrum Team, prioritizing the list and working on them in order is a good technique to tackle the impediments. This way, the team can focus on the most urgent and important issues first and avoid being overwhelmed by the number of impediments. The Scrum Master discusses the impediments with the Scrum Team is also a helpful technique, as it allows the team to share their perspectives, identify the root causes, and come up with possible solutions. The Scrum Master can also coach the team on how to remove or prevent impediments in the future.

According to the Scrum Guide, the Sprint Retrospective is an opportunity for the Scrum Team to inspect itself and create a plan for improvements to be enacted during the next Sprint. The topics that are appropriate for discussion are those that relate to how the team does its work, such as team relations, Definition of Done, and processes, tools, communication, collaboration, quality, etc. The other options are not appropriate topics for discussion in a Sprint Retrospective, as they belong to other Scrum events (such as arranging the Sprint Backlog for the next Sprint in the Sprint Planning or evaluating the value of work in the Product Backlog in the Sprint Review).