Review the PERT Network that follows. If it takes 1, 2, or 3 weeks for each activity (represented by a box) to be completed, the critical path is represented by a. the path that begins with "Start" and continues with all boxes labeled with No. 1. b. the path that begins with "Start," continues with all boxes labeled with No. 2, and concludes with "Finish." c. the path that begins with "Start," continues with one box labeled with No. 2, proceeds with all boxes labeled with No. 3, and concludes with "Finish." d. the path that begins with "Start" continues with all boxes labeled with No. 1, and concludes with "Finish."