An agile senior project team member suddenly resigns from the organization.

The project manager should have ensured that the project repository is up to date and contains all the relevant information and documentation related to the project deliverables, such as user stories, acceptance criteria, test cases, design specifications, etc. This way, the remaining team members can access the information they need to continue working on the deliverable, even if a senior team member leaves the organization. This practice is consistent with the agile principle of maintaining a single source of truth and ensuring transparency and collaboration among the team members12. References: 1: PMBOK Guide, 6th Edition, Chapter 4: Project Integration Management 2: Agile Practice Guide, Chapter 3: Life Cycle Selection