Who must do all the work to make sure Product Backlog items conform to the...

TheScrum Guideclearly assigns the responsibility for delivering a "Done" Increment to the Developers: "The Developers are the people in the Scrum Team that are committed to creating any aspect of a usable Increment each Sprint." This includes all work—development, testing, integration, etc.—needed to meet the Definition of "Done," a shared commitment that ensures quality. Option A (Scrum Team) is too broad; while the Scrum Team collaborates, only the Developers perform the hands-on work. Option C (Product Owner) is incorrect—they manage the Product Backlog, not the execution. Option D (QA Specialists) introduces a role not defined in Scrum; quality is the Developers’ collective responsibility. Option E (Scrum Master) is wrong—they facilitate, not build. Thus, B is correct.