What does a Gantt chart primarily help with in project management?

A Gantt chart is a visual tool that primarily assists in managing project timelines. It displays the project schedule, illustrating tasks along a timeline with their start and end dates, duration, and dependencies. This helps project managers and teams to quickly identify when tasks need to be completed, which tasks are reliant on others, and the overall progress of the project.

By visualizing the timeline, stakeholders can easily see the sequence of activities, anticipate potential bottlenecks, and adjust plans as necessary to ensure deadlines are met. It also facilitates communication among team members, keeping everyone informed about their responsibilities and deadlines. This streamlined visualization is crucial for effectively managing resources and ensuring timely project delivery.

In contrast, the other choices do not capture the primary function of a Gantt chart. While data analysis pertains to examining and interpreting data, measuring quality assurance focuses on assessing processes and outputs for quality standards, and creating surveys involves gathering information from respondents, none of these functions are associated with the core purpose of a Gantt chart in project management.