ANS is B
BABOK V-3 8.1.6 Measure Solution Performance – Root Cause Analysis (186=pg.176)
Root cause analysis is a systematic examination of a problem or situation that focuses on the problem's origin as the proper point of correction rather than dealing only with its effects. It applies an iterative analysis approach in order to take into account that there might be more than one root cause contributing to the effects. Root cause analysis looks at the main types of causes such as people (human error, lack of training), physical (equipment failure, poor facility), or organizational (faulty process design, poor structure). Root cause analysis helps organize the information in a framework, which allows for deeper analysis if needed. Root cause analysis can be used for:
• Reactive Analysis: identifying the root cause(s) of an occurring problem for corrective action, or
• Proactive Analysis: identifying potential problem areas for preventive action.