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In Scrum, the term " done " refers to the state where the Increment meets the Definition of Done (DoD), which is a shared understanding within the Scrum Team of what it means for work to be complete. The best two answers are:

C. No work is left to meet the Definition of Done: This statement aligns with the Scrum Guide, which states that the Increment must be in a usable condition and meet the DoD by the end of the Sprint. The DoD ensures that the work is fully completed, tested, and integrated, leaving no outstanding tasks.

D. Ready to be released to end users: This reflects the goal of Scrum that the Increment should be in a potentially releasable state at the end of each Sprint, meaning it is of sufficient quality and functionality to be delivered to users if the Product Owner chooses to do so.

The other options are incorrect because:

A. Ready for integration: While integration is part of the process, " done " implies more than just being ready for integration; it includes being fully completed and meeting the DoD.

B. All work the Developers are willing to do: This is subjective and does not align with the objective standard of the DoD, which is agreed upon by the entire Scrum Team.

E. Whatever the Product Owner defines as quality: The DoD is a team responsibility, not solely defined by the Product Owner, ensuring a collective standard rather than an individual judgment.

A Sprint may be cancelled only if the Sprint Goal becomes obsolete. This makes Option A the correct answer. The Scrum Guide is very clear that only the Product Owner has the authority to cancel a Sprint, although that decision may be influenced by stakeholders, the Developers, or the Scrum Master. The reason for cancellation is not general disruption, poor forecasting, or the appearance of new work. It is specifically tied to the Sprint Goal no longer having value or relevance.

Option B is incorrect because a new business opportunity does not automatically justify cancelling a Sprint. Scrum is designed to handle change without disrupting the Sprint unless the Sprint Goal itself is no longer valid. Option C is incorrect because feasibility concerns should be addressed through collaboration and adaptation, but they do not by themselves define the cancellation rule. Option D is incorrect because not finishing all selected work is not a reason to cancel a Sprint. Scrum accepts uncertainty, and the team inspects and adapts. The Sprint Goal remains the key commitment, and as long as it is still relevant, the Sprint should continue.

According to the Scrum Guide, estimates are made by the people doing the work, which is the Development Team. The Development Team is responsible for all estimates in the Product Backlog and the Sprint Backlog. The other options are not valid guidelines for estimating work in Scrum, as they are either too prescriptive (such as requiring story points or relative units), incorrect (such as forbidding estimating or having the Product Owner make estimates), or unnecessary (such as checking estimates with the Development Team).

The best answer is B. The Developers on the Scrum Team should write the user documentation. According to the Scrum Guide, the Definition of Done creates transparency and ensures that the product Increment meets the quality standards required for the product 1 . If user documentation is part of the Definition of Done, then it should be completed within the Sprint by the Scrum Team 1 . The Scrum Team should have all the skills needed to deliver the product, and if user documentation is part of the product, then that skill should be on the team as well 2 . The Developers on the Scrum Team are responsible for creating a plan for delivering the Increment, which includes user documentation 1 . They can also ask for help from other more experienced writers outside the team, or learn the skill through training or workshops 2 . The other options are not consistent with the Scrum values and principles, as they would create dependencies, delays, and waste in the product development process.