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The Gantt chart is specifically designed to facilitate project planning by visually representing the timeline of various activities involved in a project. It displays tasks or activities on the vertical axis and time intervals on the horizontal axis, allowing project managers and team members to see which tasks are scheduled for completion at any point in time. This sequential layout helps in understanding dependencies between tasks and identifying critical paths, thus enhancing overall project management efficiency.

In comparison, flowcharts are excellent for illustrating processes or workflows but do not provide a timeline. PERT charts focus on the relationships and sequencing of activities but are less visually intuitive regarding their timing and duration. SWOT analysis, while valuable in strategic planning for identifying strengths, weaknesses, opportunities, and threats, does not involve the sequential display of activities or timelines. The Gantt chart is the most effective tool among these options for conveying project timelines and scheduling.