The Developers should not be interrupted during the Sprint and the Sprint Goal should remain intact. These are conditions that foster creativity, quality and productivity.

A. As a decomposition of the selected Product Backlog items, the Sprint Backlog changes and may grow as the work emerges
B. The Developers may work with the Product Owner to add or remove work if they find themselves with more or less capacity than expected
C. The Product Owner can help clarify or optimize the Sprint when asked by the Developers
D. The Sprint Goal is fully formulated in the Sprint Planning event and does not change during the Sprint

Correct Answer: D

The Sprint Backlog does not have to be fully completed during the Sprint Planning. If enough work has been planned to get started the Developers can start working. The Sprint Backlog makes visible all of the work that the Developers identify as necessary to meet the Sprint Goal. Even though the Sprint Goal does not change the items on the Sprint Backlog can change during the Sprint