Who is responsible for clearly expressing Product Backlog Items?

TheScrum Guideexplicitly states: "The Product Owner is accountable for effective Product Backlog management, which includes... clearly expressing Product Backlog items." This responsibility ensures that the items reflect stakeholder needs and are understandable to the Developers. Option B is incorrect—the Scrum Master facilitates and coaches, not manages the Product Backlog. Option C is wrong—neither the Scrum Master nor Developers are accountable for this; it’s the Product Owner’s role. Option D introduces a "business analyst" role, which isn’t part of Scrum; the Product Owner directly handles this duty without delegation to a proxy. Thus, A is correct.