Which process uses expert judgment to manage project resources?

According to the PMBOK® Guide, Expert Judgment is a primary tool and technique used across multiple processes within the Project Resource Management knowledge area to ensure that resource planning and estimation are based on specialized knowledge and historical experience.

Plan Resource Management (Choice A): Expert judgment is used here to determine the best approach for identifying and managing resources. Experts provide insight into the organizational culture, the need for specialized skills, the legal requirements for labor, and the most effective ways to structure the Resource Management Plan.

Estimate Activity Resources (Choice B): Expert judgment is critical in this process to determine the specific types and quantities of material, human resources, equipment, or supplies required for each activity. Experts with experience in similar technical work can accurately predict how many resources are needed and what specific competencies are required to complete a task successfully.

Manage Team (Choice C): While a project manager uses interpersonal skills to manage a team, Expert Judgment is not formally listed as a primary tool/technique for the Manage Team process in the same way it is for the planning and estimation phases. Manage Team focuses more on Interpersonal and Team Skills (like conflict management and leadership).

Since both Plan Resource Management and Estimate Activity Resources officially utilize Expert Judgment as a defined Tool and Technique in the PMI framework, Choice D is the most accurate and comprehensive answer.