What is the primary function of a project manager?

The primary function of a project manager is to oversee and coordinate project activities. This involves planning, executing, and closing projects by effectively managing resources, timelines, and project scope. The project manager is responsible for ensuring that all components of the project are aligned and progressing according to the established goals and objectives. They serve as the central point of communication among stakeholders, facilitating collaboration and addressing any issues that may arise during the project lifecycle.

This role is vital for ensuring that projects are completed on time, within budget, and to the satisfaction of the client and other stakeholders. By coordinating various tasks and team members, the project manager helps maintain focus on the project's goals, adapting plans as necessary to ensure success.

Other choices highlight various aspects of project management, such as independent task execution, tool development, or human resource management. However, these do not capture the comprehensive leadership and integrative responsibilities that define the project manager's role. The essence of project management lies in the coordination and strategic oversight of all project activities, which is why the correct answer emphasizes this function.