Mentoring is a recognized approach for enhancing the skills of less-experienced team members. It allows for knowledge transfer and provides the less-experienced members with guidance and support as they grow into their roles. This approach aligns with the PMI's emphasis on team development and the value of leveraging the collective knowledge of the team. By pairing less-experienced members with mentors, the project manager can foster a collaborative environment where all team members can contribute effectively while learning from one another.
References: The answer is supported by best practices in team management and development, which are part of the PMI's standards for project management and business analysis. While the PMI does not prescribe a specific action in this scenario, the principles of team development and knowledge sharing are consistent with PMI's guidance on effective project management and business analysis practices12.

When faced with uncertain requirements, it is beneficial to focus on developing a minimum viable product (MVP). This approach allows the project to move forward by concentrating on the creation of a product with the minimum amount of features needed to satisfy early adopters and to provide feedback for future development cycles. This strategy is supported by the PMBOK Guide, which suggests that when dealing with high uncertainty, adaptive or iterative life cycles may be employed, which are characteristic of agile methodologies where MVPs are commonly utilized1. Additionally, the PMI-PBA® highlights the importance of continuously refining and clarifying requirements, which aligns with the iterative nature of MVP development2.
References:
PMBOK Guide - Seventh Edition1
PMI Professional in Business Analysis (PMI-PBA)® Handbook2