When we begin to plan a project, we first draw a chart which shows what needs to be done. The project itself in put in a box at the top of the chart and the major tasks that are needed to be accomplished are listed in boxes in the next row down. The next row of boxes shows how those major tasks are each split into several smaller pieces. Subsequent rows show and how those smaller pieces are then split into still smaller pieces which are each split into smaller and smaller pieces and so on. What is this project planning graphical tool called? () PERT diagram (O CPM diagram () Network diagram () Gantt Chart () Work Breakdown Structure