Which of the following functions is categorized as ongoing and regular tasks?

The answer is operation, as this function encompasses the ongoing and regular tasks necessary for the functioning of an organization. Operations involve the day-to-day activities that ensure that the organization runs smoothly. This includes managing resources, overseeing production processes, handling inventory, and maintaining customer service standards.

In contrast, integration refers to the process of bringing together various elements of a project to ensure that they work together effectively. Planning is more focused on setting goals and outlining the steps needed to achieve them, while closure involves finalizing all activities and officially closing a project. These functions, while vital to project management, are not characterized as ongoing and regular tasks in the same way that operations are. Operations are continuous and essential for sustaining the organization’s activities over time.