What is the term for organizing and performing a particular activity?

The term that best describes organizing and performing a particular activity is "conduct." Conducting an activity involves overseeing its execution, making decisions, and ensuring that everything is organized appropriately. This term encapsulates the idea of leading and facilitating the various components necessary for an activity to be carried out effectively.

While other terms like "manage," "execute," and "control" might seem relevant, they focus more on specific aspects of performance. "Manage" emphasizes the direction and administration involved in an activity. "Execute" refers primarily to the act of carrying out a plan or task, and "control" implies monitoring or regulating ongoing processes. However, "conduct" incorporates both the planning and the implementation aspects, making it the most fitting choice in this context.