A new team member joins the project and fails to apply the project-specific quality assurance...

This question fits the Process domain because it concerns process compliance, documentation, and quality management. In PMP thinking, project-specific quality procedures are defined in project management documentation, especially the quality management plan and related process assets. If a new team member fails to apply the required QA processes, the first preventive measure should have been ensuring that the person had access to the correct project documentation and could refer to the approved quality approach for the project. Access to the governing plan is the most direct and foundational control.

Option A does not solve the root problem because delegating QA does not ensure that a new team member understands or follows the process. Option C may help in some cases, but external training is excessive unless there is a broader skills gap. Option D is too general; understanding all requirements is important, but the specific failure here concerns project QA procedures. PMP-style reasoning favors making sure the team has clear access to the correct plans, processes, and standards before work begins. Therefore, ensuring access to the quality management plan is the best preventive action.