In HVIT, organizations move quickly, but they must also learn rapidly from live failures and reduce the likelihood of recurrence. Problem management is the practice most directly concerned with identifying underlying causes of incidents and managing known errors and workarounds. That makes it the best answer when live errors are occurring and the organization needs protection from repeated impact.

Deployment management focuses on moving new or changed components into live environments, but it does not primarily address root cause analysis of recurring live issues. Business analysis helps clarify needs and requirements, which is useful earlier in the lifecycle, but not as the main control once live errors are already happening. Service continuity management is about preparedness for major disruptions and recovery scenarios, not routine or recurring product errors.

ITIL practice guidance describes problem management as reducing the likelihood and impact of incidents by identifying actual and potential causes and managing workarounds and known errors . That is why D is the best fit.

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