According to the PMBOK® Guide, the Develop Project Charter process is the process of developing a document that formally authorizes the existence of a project and provides the project manager with the authority to apply organizational resources to project activities.

Because this process occurs at the very beginning of the project (Initiation), the tools and techniques focus on high-level analysis and consensus-building rather than detailed project management baselines.

Expert Judgment: Defined as judgment provided based upon expertise in an application area, knowledge area, or industry. It is used to process the information from the business case and agreements.

Data Gathering: Includes techniques such as:

Brainstorming: To identify risks, participants, and success criteria.

Focus Groups: To bring together stakeholders and subject matter experts to learn about the project expectations.

Interviews: To obtain information from high-level stakeholders.

Interpersonal and Team Skills: Specifically Conflict Management (to align stakeholders on objectives), Facilitation (to lead the group toward a decision), and Meeting Management.

Meetings: Used to discuss project objectives, success criteria, key deliverables, and high-level milestones with key stakeholders.

Analysis of Other Options:

A and C. Scope statement / Schedule baseline: These are incorrect because the Scope Statement and Baselines are outputs of the Planning process group. They do not exist yet when the Project Charter is being developed; in fact, the Charter is what provides the authority to create these documents later.

B. Cost baseline: Similar to the above, the cost baseline is a result of the Determine Budget process in Planning. Furthermore, while the Lessons Learned database is an input (part of OPA), it is not a tool or technique.