Which of the following is a schedule that illustrates the duration of an activity?

A process diagram illustrates the sequence and flow of steps in a process, not the duration or timeline of project activities.

An Ishikawa (fishbone) diagram is a cause-and-effect tool used in quality management to identify root causes of a problem, not to schedule activities.

A Gantt chart maps each scheduled activity as a horizontal bar whose length corresponds to its duration, against a calendar timeline. This makes it the standard tool for communicating schedule information, showing activity durations, dependencies, and overall project timeline at a glance.

A Pareto chart ranks defects or issues by frequency to identify the vital few causes responsible for most problems, and is not a scheduling tool.