please help me to answer this project management question

6. CRITICAL PATH METHOD (CPM). 20 points. Activity Predecessor Total Slack B D E F G A A, B D C, D E, F Duration (in Days) 4 3 5 7 9 6 5 a. Draw the Gantt chart. b. Sketch the network diagram. You can draw parts (a) and (b)manually or using any software you like, such as Word, Excel, Visio, ProjectLibre (open source), and Microsoft Project. Copy and paste the chart and diagram on your MS Word file. C. List all paths and their associate total time. Example: A -> ... -> G = ... days d. Define the critical path in English using your own words. e. Which path(s) is the critical path? f. What is the estimated completion time to finish this project? g. Assume that the required completion time (target) is like your answerin part (f). For each activity, calculate the earliest start time (ES), earliest finish time (EF), latest start time (LS), latest finish time (LF), and total slack (TS). Put those numbers (ES, EF, etc.) on the network diagram. Fill the total slack in the above table (NOTES: Please use 'o' to start the date)