During a post-test debrief for a failed test, the discussion becomes heated as engineers and technicians begin blaming each other for the outcome. What is the Certified Test Conductor's most important role in this situation?

1. To act as a neutral facilitator, refocusing the discussion on the process and technical facts.
2. To end the meeting immediately until a root cause can be determined offline.
3. To identify the individual most at fault to ensure accountability.
4. To side with the engineering team, as they have ultimate design authority.