The project manager realizes that the product owner has a lot of potential but is...

 According to the Professional in Business Analysis (PMI-PBA)® Handbook, one of the key competencies for business analysts is communication, which includes the ability to use appropriate communication styles, methods, and techniques for different situations and audiences. Assertive communication is one of the communication styles that business analysts should master, as it allows them to express their opinions, needs, and feelings in a respectful and confident manner. Assertive communication can help business analysts to avoid conflicts, build trust, and influence stakeholders. Therefore, if the product owner is lacking communication skills, the project manager should suggest that they attend a training session about assertive communication, as this can help them improve their performance and collaboration with the project team and other stakeholders. References:

[6]: Professional in Business Analysis (PMI-PBA)® Handbook, page 10

[7]: Business Analysis for Practitioners: A Practice Guide, page 29

[8]: Effective Communication Skills for Business Analysts, page 5