Critical Path
The Critical Path is the Shortest Path to get to end. Properties of a Critical Path Include; The least amount of Slack possible. All tasks on the Critical Path are Critical Tasks.

Hints
Look where the
and are both the same. Reducing the value of a Task that is on the critical path, is called “Crashing” and (im pretty sure) it reduces the minimum completion time by the amount reduced, without affecting the critical path itself.
Changing a Desired Critical Path
- You want to make your critical path the longest way to get there