Which of the following is an effective graphic tool for measuring organizational progress after plan implementation?

A Gantt chart is an effective graphic tool for measuring organizational progress after plan implementation because it visually represents the timeline of a project, including the start and finish dates of various elements or tasks within that project. It allows stakeholders to see which tasks are on schedule, which are delayed, and how tasks overlap. This visualization facilitates better project management and communication among team members by providing a clear overview of progress against the planned timeline.

The Gantt chart's structure helps in tracking deadlines and milestones, making it particularly useful for evaluating how well the implementation is proceeding compared to the original plan. Additionally, this tool can highlight dependencies between tasks, showing how the delay of one task may impact the overall project timeline.

Other types of charts, while useful in different contexts, are not specifically designed to measure project progress in terms of timelines and deadlines. For instance, flow charts are effective for illustrating processes, pie charts are used for showing proportions of a whole, and bar graphs are ideal for comparing quantities across categories. However, none of these options provide the comprehensive temporal overview that a Gantt chart does in relation to project planning and implementation.