Answer:
a. It is an output of the Validate Scope process.
Explanation:
We can define project scope statement as a tool which is used to manifest the main deliverables of project which includes the major milestones, all requirements, constraints and assumptions. It describes, in detail, the project’s deliverables and the work required to create those deliverables. It also provides a common understanding of the project scope among project stakeholders. It may contain explicit scope exclusions that can assist in managing stakeholder expectations. It is an output or the result of scope process not the validate scope process, therefore, all other options are correct while option "a" is not true.