正解:C
The project manager should review existing artifacts to get an understanding of the purpose of the project. Existing artifacts are documents or records that provide information about the project background, context, scope, objectives, requirements, stakeholders, and deliverables. They may include documents such as project proposal, project charter, business case, feasibility study, statement of work (SOW), or contract. Reviewing existing artifacts can help to clarify the project vision and expectations and provide a basis for planning and executing the project.