PMI Exam PMI-RMP Topic 5 Question 7 Discussion

Rob is the project manager of the IDLK Project for his company. This project has a budget of $5,600,000 and is expected to last 18 months. Rob has learned that a new law may affect how the project is allowed to proceed - even though the organization has already invested over $750,000 in the project. What risk response is the most appropriate for this instance?