According to the PMBOK Guide, one of the key inputs to the develop project team process is the training needs assessment, which identifies the gaps between the current and desired competencies of the project team members1. The project manager should assess the training requirements and ensure time for professional development training by senior members, as this is a way of enhancing the skills and knowledge of the team members, improving their performance, and increasing their motivation and satisfaction2. This option is also aligned with the Professional in Business Analysis (PMI-PBA) Guide, which states that the business analyst should identify and address the training needs of the project team and stakeholders3. The other options are not appropriate, as they do not address the root cause of the problem, which is the lack of experience and competence of the team members. Increasing the overall project duration may not improve the quality of the project deliverables, and may also increase the project costs and risks. Replacing or removing team members may not be feasible or desirable, as it may disrupt the team dynamics, cause resentment, and create additional work for the project manager. Moreover, these options do not consider the potential of the team members to learn and grow in their roles. References: 1: PMBOK Guide, 6th edition, page 3492: Project Team Training:
Proven Key to Organizational Teamwork43: Professional in Business Analysis (PMI-PBA) Guide, 2nd edition, page 97.