Gantt charts are useful in project management because they:

Gantt charts are a powerful tool in project management specifically because they provide a visual representation of timelines and milestones. This visual format allows project managers and team members to easily see the overall project schedule at a glance. Each task or phase of the project is displayed along a timeline, which helps in understanding the sequence of tasks, their duration, and how they interrelate.

By utilizing Gantt charts, teams can effectively track progress against deadlines, identify potential bottlenecks, and maintain a clear focus on milestones that signal critical junctures within the project. This clarity facilitates better planning and communication among team members, promoting a more organized approach to achieving project goals.

Other options do not accurately reflect the purpose of Gantt charts. While they can reduce the frequency of team meetings by providing clear insights into project timelines, they do not eliminate the need for communication and collaboration entirely. Gantt charts also do not guarantee project completion on time; they are a tool for tracking and managing timelines rather than a guarantee of success. Lastly, while they can somewhat streamline the documentation process by visually summarizing tasks, Gantt charts do not replace the necessary documentation that supports project management.