PMI Exam PMI-RMP Topic 8 Question 9 Discussion

Harry is the project manager of the MMQ Construction Project. In this project, Harry has identified a supplier who can create stained glass windows for 1,000 window units in the construction project. The supplier is an artist who works by himself, but creates windows for several companies throughout the United States. Management reviews the proposal to use this supplier and while they agree that the supplier is talented, they do not think the artist can fulfill the 1,000 window units in time for the project's deadline. Management asked Harry to find a supplier who can fulfill the completion of the windows by the needed date in the schedule. What risk response has management asked Harry to implement?