Final answer:
A Gantt chart is a visual tool used in project management to track the progress of tasks and compare them to the manager's projected completion. It helps in identifying delays and managing the project timeline.
Step-by-step explanation:
A Gantt chart is a visual depiction of the time frame planned for completing specific tasks as compared to the manager's projected task completion. It is a useful tool for project management as it allows managers to track the progress of tasks and identify any delays or potential bottlenecks. The chart shows the planned start and end dates of each task, as well as the actual start and end dates, giving an overview of the project timeline.