Explanation
According to the Agile Practice Guide, one of the benefits of using an agile approach is to deliver value to the customer early and frequently, by delivering working product increments in short iterations. This can help the project manager to achieve a quick win, which is a small but visible success that can boost the confidence and support of the project sponsor and other stakeholders. A quick win can also help the project manager to validate the project assumptions, test the customer feedback, and adapt to changing requirements. A predictive approach, on the other hand, would require a detailed upfront planning and a fixed scope, which may not be suitable for a project that is transitioning to agile and faces uncertainty and skepticism from some stakeholders.
A hybrid project, which combines agile and predictive elements, may be an option, but it would depend on the project context and the level of stakeholder involvement and agreement. Therefore, the best approach for the project manager in this situation is to use an agile approach, as it would provide working functionality earlier and help ensure the continuation of the project. References: Agile Practice Guide, pages 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, and 22. PMP Question 344.