What defines the organization of team members and their roles in a construction project?

The project delivery system is fundamental in defining how a construction project is organized, outlining the roles and responsibilities of team members, and establishing the workflow among them. It encompasses the methodology by which the project is designed and constructed, including how the team members collaborate throughout the different phases.

In essence, project delivery systems, such as design-build, design-bid-build, or integrated project delivery, dictate how the project participants interact, coordinate, and contribute to the project's success. By clearly defining these relationships and processes, the project delivery system sets the foundation for effective communication, accountability, and project execution.

While other choices, such as the project management framework or contract management system, may help facilitate certain aspects of the project or provide structured processes, they do not specifically outline the organization of the team or the roles within the construction project in the same comprehensive manner as the project delivery system does. Thus, the project delivery system stands out as the correct answer.