The project manager should plan a communication method and allow the project team members to virtually interact. This will help to facilitate effective communication, information sharing, feedback, and coordination among the remote project team members. The project manager should also consider the cultural, linguistic, and time zone differences among the team members and use appropriate tools and techniques to overcome the challenges of virtual collaboration. Discussing the concerns with the project sponsor, modifying the project charter, creating a social media group platform, and setting the ground rules are all possible actions that the project manager can take, but they are not the best answer to the question, as they do not directly address the issue of collaboration between the remote project team members. References: = PMBOK Guide, 6th edition, pages 366-367, 378-379, 555-556; Agile Practice Guide, pages 28-29, 32-33; PMP Exam Content Outline,
2020, pages 6-7.