The Definition of Done is a shared understanding of what it means for work to be complete, and ensures transparency of the quality of the work done1. The Increment is the sum of all the Product Backlog items completed during a Sprint and the value of the increments of all previous Sprints2. The Increment must be usable and potentially releasable, meaning that it meets the quality standards set by the Scrum Team and the stakeholders[3][3]. Doing all work needed to meet the Definition of Done enhances the transparency of the Increment, as it ensures that the Increment is truly done and reflects the current state of the product4. The other options do not enhance the transparency of the Increment, as they either introduce unnecessary complexity, delay, or overhead, or do not provide a clear and consistent way to measure the quality of the work done.

References:

1: The Scrum Guide, November 2020, p. 13

2: The Scrum Guide, November 2020, p. 6

[3][3]: The Scrum Guide, November 2020, p. 13

4: Understanding and Applying the Scrum Framework, Scrum.org, accessed on December 16, 2023