Correct Answer: A, BTo resolve the issue where a workflow fails to copy nodes, the developer should first check the Workflow Failures screen to see if any instances of the workflow have failed. This will help identify if there are any errors or problems that caused the workflow to stop working as expected. Additionally, they should check the Workflow Instances screen to verify that the instance of the workflow is present and to examine its status. This will provide insights into whether the workflow is running correctly or if it encountered issues during execution.