What does a Gantt chart primarily illustrate in project management?

A Gantt chart primarily illustrates project tasks along a timeline, providing a visual representation of the schedule for a project. It displays the tasks required to complete a project, the duration of each task, and the overlapping of tasks, which helps project managers track progress and identify any potential bottlenecks. Each bar on the chart represents a task, and its position and length indicate the start date, end date, and overall duration.

This visualization is essential for effective time management as it allows teams to see what tasks are happening simultaneously and how they interrelate. It serves as a crucial tool for planning, scheduling, and monitoring project timelines, ensuring that projects stay on track.

The other options focus on different aspects of project management. Resource allocation pertains to the distribution of resources among tasks, project costs reflect financial aspects, and stakeholder engagement involves communication and relationship management. While these are important elements in project management, they do not accurately capture the primary function of a Gantt chart.