Final answer:
Gantt Charts are the best organizational tool for managers to efficiently plan and monitor complex tasks by breaking them down into smaller, manageable steps and setting measurable goals.
Step-by-step explanation:
When managers are faced with the task of organizing large and complex activities, they may find it useful to employ a framework that helps them understand what is required and the time necessary to complete various sequences of tasks. The best choice for a manager to use under such circumstances would likely be C) Gantt Charts. Gantt charts are visual tools that allow managers to track project schedules, showing the start and finish dates of elements within a project. This project management tool helps manage time effectively and ensures that various parts of the project are logically sequenced and that resources are allocated efficiently.
Breaking down large tasks into smaller steps, similar to how students approach a large research project or essay, is a useful heuristic. Setting measurable goals and milestones at regular intervals (3, 6, 9, and 12-month blocks) enables a manager to stay on track and adapt as needed, aligning with the nature of the work that often incorporates teams with diverse skills tackling specific goals within broader social and organizational structures.