According to the Scrum Guide1, the Sprint Planning meeting has a time-box of eight hours or less for a one-month Sprint. The Scrum Master ensures that the meeting is time-boxed and keeps the Scrum Team focused on the objective. If the Development Team cannot forecast how many Product Backlog items it can complete, it should still start the Sprint and work on the most likely items to meet the Sprint Goal. The Sprint Backlog can be updated throughout the Sprint as more is learned. The Scrum Master should also support the team to discuss the reasons for the lack of clarity in the Product Backlog items and how to prevent it from happening again in the next Sprint Retrospective.

According to the Scrum Guide, the Developers do the work to make sure Product Backlog items conform to the Definition of Done, as they are responsible for creating a ''Done'' Increment that meets the Definition of Done. The other options are not valid, as they imply that the work is done by someone else outside the Development Team (such as Quality Assurance Team) or by another role on the Scrum Team (such as Product Owner or Scrum Master).

The best answer is C. The function or purpose of management in Scrum is to present the Scrum Teams with insights and resources that help them improve. According to the article What is the Function or Purpose of Management in Scrum?, management is still critical to providing vision, securing resources, hiring talent, training teams, removing roadblocks, and continuously improving. Management also encourages collaboration and establishes Scrum Team autonomy, which are essential for Scrum's values and principles.

A, B and D are not good answers because they imply a command-and-control approach that contradicts Scrum's values of respect, openness, and self-organization. Management in Scrum is not supposed to micromanage, judge, or interfere with the work of the Developers, but rather support them and enable them to deliver value.

According to the Scrum Guide, a Scrum Team is not only allowed to meet with stakeholders during Sprint Review, but also during Sprint Planning and throughout the Sprint as needed. The Sprint Review is an opportunity for the Scrum Team and the stakeholders to collaborate on what was done in the Sprint and what to do next. However, it is not the only time that stakeholder feedback is welcomed and valued.

The correct answer is B, because the Development Team is responsible for managing the progress of work during a Sprint. The Scrum Guide states that ''the Development Team tracks this total work remaining at least for every Daily Scrum to project the likelihood of achieving the Sprint Goal. By tracking the remaining work throughout the Sprint, the Development Team can manage its progress.''