Answer option C is correct.
Project organization chart facilitates people to know large amounts of information as a picture rather than a table of names and numbers.
The project organization chart is a document that graphically portrays the team members of the project and their interrelationships for a specific project. An organization chart is a diagram that shows the hierarchical structure of an organization. Usually a chart starts with a higher or superior level and branches downward to subordinate levels.
Project based organizational structure

Answer option C is incorrect. A risk register is a document that contains the results of qualitative risk analysis, quantitative risk analysis, and risk response planning. Description, category, cause, probability of occurring, impact on objectives, proposed responses, owner, and the current status of all identified risks are put in the risk register.
Answer option A is incorrect. A project charter is a document that officially recognizes and acknowledges that a project exists. It helps define requirements and expectations to all involved in the project. It is issued by the project sponsor. It can be as simple as a one-page form for a very small project, briefly describing the project and listing the responsibilities and authority of the project manager. Charters can be much longer, however, depending on the size of the project. In addition to formally authorizing a project, the charter provides the project manager with the authority to apply organizational resources to project activities. Project charters are important to the success of a project.
It's a good idea to have a project manager assigned to the project prior to the start of planning, and preferably while the project charter is being developed. Here's an example of a project charter.

Answer option D is incorrect. The stakeholder register is a project management document that contains a list of the stakeholders associated with the project. It assesses how they are involved in the project and identifies what role they play in the organization. The information in this document can be very perceptive and is meant for limited exchange only. It also contains relevant information about the stakeholders, such as their requirements, expectations, and influence on the project.
Reference: "Project Management Body of Knowledge (PMBOK Guide), Fourth edition"
Chapter: Communications and Human Resources
Objective: Organizational Dependencies and Charts
C