What is a Gantt chart primarily used for?

A Gantt chart is a type of bar chart that provides a visual representation of a project schedule. It illustrates the start and finish dates of the various elements or tasks of a project, allowing project managers and teams to see the overall timeline and the relationships between tasks at a glance. One of the primary benefits of using a Gantt chart is that it helps in tracking progress against the project timeline, making it easier to manage deadlines and allocate resources effectively. This visual tool enhances communication among stakeholders and helps keep everyone aligned with the project objectives and schedules.

The other options pertain to different aspects of project management. For instance, establishing team roles focuses on defining responsibilities and assignments within the team rather than displaying project timelines. Developing project budgets involves financial planning and resource allocation, which are not the primary function of a Gantt chart. Documenting project requirements is about gathering and detailing what needs to be accomplished, a process that would typically occur early in the project lifecycle and is separate from visualizing timelines. Thus, the Gantt chart stands out specifically for its role in presenting and managing project schedules.