The project manager should use a hybrid model to combine predictive and adaptive life cycles. This approach allows for the initial planning and structure of the predictive approach while also incorporating the flexibility of the adaptive approach to respond to changes and new information. The hybrid approach is beneficial in scenarios where the project has clear phases but also requires adaptability to changing requirements and inputs from stakeholders. : PMBOKGuide - Seventh Edition: Covers all development approaches including predictive, adaptive, and hybrid1. Introduction to Adaptive Project Management: Emphasizes the importance of adapting to changes and learning from outcomes2. Predictive & Adaptive Project Management: Discusses when to use predictive and adaptive approaches3. Hybrid Project Management: Explains the hybrid approach as a combination of high-level planning with the waterfall approach and execution with Agile methods4.