A project manager on a large multiyear industrial project has diverse stakeholders across regions and is facing a stakeholder engagement issue. Which two tools should the project manager use to identify the underlying cause of why engagement isn't producing the planned results? (Choose two.)

The Five Whys technique is a root cause analysis method where you repeatedly ask "why" to peel back layers of symptoms and uncover the fundamental cause of a problem. Ishikawa diagrams (also known as fishbone or cause-and-effect diagrams) are visual tools used to categorize potential causes of a problem to identify its root causes. Both are effective for diagnosing underlying issues in stakeholder engagement. The communications management plan outlines how to communicate, but not why engagement is failing. An issue log records problems but doesn't analyze their root causes. Open-space meetings are a facilitation technique for discussion, not a root cause analysis tool.