Explanation
According to the PMBOK Guide 7th Edition, the project manager should apply the leadership skill of having a holistic and systemic view, which means understanding the interrelationships and dependencies among the project components, the project environment, and the project stakeholders. The project manager should also align the project objectives with the customer's needs and expectations. Therefore, the best option is to have a holistic and systemic view, which is demonstrated by asking each team member to present how their deliverables are impacting the customer's final product requirements. Ensuring that expectations are clear, maintaining team spirit and cooperation, and focusing on the important things are also important leadership skills, but they are not the best option to answer this question. References: PMBOK Guide 7th Ed., 2.0 The Project Delivery Principles, Page 9; PMBOK Guide 7th Ed., 3.0 The Project Team, Page 23; 1