The critical path is the sequence of tasks that determines the minimum project duration. It is the longest path through the network diagram and has the least amount of slack or float. Based on the provided network diagram, the critical path is A-C-G-K-M, which has the longest total duration when adding up the individual task durations. References = The concept of the critical path is covered in the CompTIA Project+ Certification Study Guide1. For more detailed information on how to calculate and identify the critical path in project management, you can refer to the study guide and other project management resources2.