Which tool displays a project schedule timeline with tasks, their durations, and relationships?

• A. Network Diagram
• B. PERT Chart
• C. Gantt Chart
• D. Resource Histogram

Answer: (C)

When you want to see a project schedule laid out on a calendar, with each task shown as a horizontal bar whose length represents its duration and with lines indicating how tasks depend on one another, you’re looking at a Gantt chart. This format places tasks on a time axis, so start and finish dates are easy to read, overlaps and parallel work are visible, and the relationships between tasks—what must precede what—are clear through dependency connections. It’s the go-to tool for visualizing the schedule at a glance and tracking progress over time. Other diagrams focus on different things: a network diagram emphasizes the order and flow of tasks without a time scale; a PERT chart highlights time estimates and probabilistic durations along a network; a resource histogram shows how resources are allocated over time rather than the overall timeline.