An organization is evaluating change management practices for AI-based decision support models. Which of the following BEST demonstrates effective AI-focused change management?

Quarterly independent expert reviews are a form of monitoring or assurance, not a change management practice, and do not ensure that changes are controlled or traceable.

Assigning a single team member to make model adjustments lacks oversight, segregation of duties, and documentation - which are all fundamental change management requirements.

Documenting model updates and retraining sessions creates a traceable record of what changed, when, why, and by whom, which is essential for understanding model behavior over time and investigating incidents or performance degradation. Traceability supports regulatory compliance, enables rollback decisions, and provides the audit evidence required to demonstrate that changes were reviewed and authorized. This directly reflects the core principles of change management - control, accountability, and reversibility.

Deploying two model copies to compare results is an A/B testing or validation technique, not a change management practice, and does not address the governance of the change process.