Gwen is a production and operations manager and loves details. She likes to keep track of how projects are moving along. One of Gwen's favorite tools is a bar graph that shows how much work has been completed on the projects that are currently under way and which processes are behind schedule. Gwen likes to use a(n) Multiple Choice CAD/CAM diagram. Targeted Completion Date (TCD) graph. Gantt chart. input-output graph