A project manager is finalizing the schedule for a software rollout. The network diagram shows four possible paths from start to finish with the following total durations: Path 1 = 22 days, Path 2 = 30 days, Path 3 = 27 days, and Path 4 = 25 days. The sponsor asks the project manager which path the team must monitor most closely because any delay on it will directly push out the project completion date. Which path should the project manager identify?