Ensuring quality in a human resources–focused project such as this involves planning, evaluating, and continually improving based on measurable data and feedback. The project manager must:

A: Collect feedback and conduct surveys/questionnaires → Direct feedback provides qualitative insights into team effectiveness and training outcomes.

C: Document quality gaps and analyze them → This supports continuous improvement by identifying and addressing performance deficiencies.

D: Develop a proper quality management plan → A measurable quality plan ensures consistent standards, metrics, and reviews throughout the project.

Option B (hiring a certified expert) is not mandatory; the project manager can own quality responsibilities with proper planning and stakeholder engagement.

Option E (using an external framework) can support performance but is not essential or sufficient alone for managing quality.