As a project manager, you will be answerable when the customers are unhappy about the project outcomes. While you answer this project management interview question, you should be able to reveal how much you value the customers and that you would accept their authority without being critical. You can say that you will try to make the necessary modifications that the customer is looking for. You can explain the steps you have taken to ensure regular interaction with the customer throughout the project. Also, you can say that you will communicate effectively to make the customer understand that the outcomes are within the scope of the project.