The Automation Lightning App ' s Monitor tab is Salesforce ' s centralized interface for examining failed and paused flow interviews. Salesforce states that the Monitor tab displays failed interviews, their error information, and details needed to determine why execution failed. From the failed interview details, an administrator can open the run in debug mode and inspect the execution information without requiring the user to reproduce the issue. This directly satisfies the requirement to troubleshoot intermittent production failures from historical flow runs. Option A focuses primarily on paused interviews and is not the current comprehensive monitoring experience. Apex Replay Debugger is intended for Apex debugging rather than declarative Flow execution. Running the flow manually as another user creates a new test execution rather than analyzing the specific production failures that already occurred.