What tool illustrates interdependencies between relationships and tasks in project planning?

In project planning, the critical path method is a key tool used to identify the longest sequence of dependent tasks and determine the minimum time needed to complete a project. By illustrating the interdependencies between relationships and tasks, it showcases which tasks must be completed on time to ensure that the overall project timeline is adhered to. Understanding the critical path allows project managers to prioritize tasks effectively and allocate resources where they are most needed to prevent delays.

In contrast, a timeline provides a broad overview of project dates but does not clearly map out task dependencies. A Gantt chart presents tasks along a timeline but is more focused on the scheduling aspect rather than illustrating how tasks relate to one another. A flowchart can visualize processes and workflows but does not specifically indicate the critical path or the interdependencies between tasks within a project framework. Therefore, the critical path method is the most suitable tool for showcasing these interdependencies in the context of project planning.