One particular incident repeatedly occurs every first day of the working week.

For a recurring incident,problem managementinITILaims to identify the root cause to prevent future occurrences. The5-Whystechnique (C) is recommended as it involves repeatedly asking “why” to drill down to the root cause of the issue. This simple, effective method is suitable for a group of technical specialists analyzing a recurring problem, such as an incident occurring every Monday, which may stem from a specific process, configuration, or system issue.

Kepner-Tregoe (A):A structured decision-making and problem-solving method, more complex and less focused on root cause analysis alone.

Technical observation post (B):Not a standard problem management technique; likely a distractor.

Fault isolation (D):Focuses on isolating faulty components, more applicable to hardware issues than recurring process-related incidents.

The 5-Whys technique is widely used in ITIL problem management for its simplicity and effectiveness in collaborative root cause analysis.