The correct answer is D - Assume the team member's tasks to meet iteration goals and notify the Product Owner. Agile teams are self-organizing and accountable. High-performing teams take ownership of shared goals and redistribute work as needed to maintain commitment.
From the PMI Agile Practice Guide:
"High-performing agile teams collaborate to deliver sprint goals, adapting to changes such as unavailability of team members. They adjust workload and communicate impacts transparently." (PMI Agile Practice Guide, Section 4.3 - Team Performance and Self-Organization) Mike Griffiths explains:
"When team composition changes, the team must redistribute work to ensure delivery. Ownership, trust, and flexibility are core traits of high-performing agile teams." (Mike Griffiths, PMI-ACP Exam Prep, Chapter 4 - Team Performance) Incorrect options:
* A signals dysfunction and abdicates team responsibility.
* B implies external management of team staffing.
* C violates the principle of self-organization.