Final answer:
Globalization, increased complexity, and technological advancements are three core factors influencing the growth of PMOs. Additional factors include market dynamics and the need for responsive organizational structures in project management.
Step-by-step explanation:
Three key factors that are playing major roles in the growth of PMOs (Project Management Offices) include globalization, increased complexity, and technological advancements. These elements contribute to the evolving landscape of project management by expanding the reach and scale of projects, compounding their intricacies, and requiring continual adaptation to new technologies. In addition, other crucial factors influencing project management include market forces, such as demand and supply shifts, and the importance of organizational responsiveness through team-based structures and stakeholder engagement in project evaluation.