Final answer:
Overseeing existing operations is not typically the role of a project manager, whose responsibilities lie in managing temporary, non-repetitive activities aimed at a specific goal, with a focus on time, cost, and performance trade-offs.
Step-by-step explanation:
The role of a project manager typically involves the management of a unique, non-repetitive endeavor aimed at achieving a specific goal, which makes project management a temporary activity. These managers are responsible for making key decisions related to time, cost, and performance trade-offs to ensure the successful completion of the project. They often collaborate with a variety of stakeholders, including a team that may consist of vendors and suppliers. However, overseeing existing operations is not typically within the purview of a project manager. Operations management is concerned with ongoing, repetitive activities aimed at maintaining and managing an organization's regular business activities. Therefore, the answer to the student's question is B. Overseeing existing operations.