The correct answer is D - Facilitate a team retrospective.
A drop in team morale and performance signals the need for a structured conversation where the team can reflect, diagnose root causes, and propose changes. Retrospectives are the Agile mechanism for identifying and addressing performance issues in a collaborative, non-blaming environment.
PMI Agile Practice Guide:
"Retrospectives allow teams to reflect on their performance, discuss what's working or not, and commit to improvement actions. This is the key mechanism for continuous team development." (PMI Agile Practice Guide, Section 5.8 - Retrospectives) Mike Griffiths affirms:
"Team disengagement often stems from unresolved issues or lack of empowerment. Retrospectives are critical for rebuilding engagement, trust, and improving team dynamics." (PMI-ACP Exam Prep, Chapter 4 - Team Performance) Incorrect options:
* A skips team-level resolution and risks undermining trust.
* B manipulates metrics without solving the root problem.
* C is useful for daily progress updates but not for deep reflection.