SCRUMstudy defines the Scrum Master primarily as a facilitator who ensures that the Scrum Team is provided with an environment conducive to successfully completing product development.
Options A and B describe Product Owner responsibilities. The Product Owner is responsible for maximizing business value, representing the Voice of the Customer, articulating customer requirements, and maintaining the business justification of the project. The Scrum Master supports these processes but does not own them.
Option C also improperly combines responsibilities. In larger Scrum initiatives, scaled roles such as Chief Scrum Master, Program Scrum Master, Chief Product Owner, or Program Product Owner may coordinate corresponding roles across teams or projects. A standard Scrum Master is not responsible for maintaining business justification across multiple Product Owners.
The Scrum Master's central duties instead include facilitating Scrum processes and meetings, coaching participants, removing impediments, protecting the team from disruptive interference, and maintaining a working environment in which a self-organizing team can succeed.
Therefore, D precisely reflects the SBOK definition.
Study Guide reference: Organization - > Core Roles - > Scrum Master; Product Owner; Supporting/Servant Leadership.
========
