The Problem Solution Path (P.S. Path) is how you structure your Prelaunch Content (the material you release during your Prelaunch Sequence). In the P.S. Path, a problem is identified and a solution is provided. Then, another problem is identified, leading to the next piece of Prelaunch Content (where prospects will find the next solution).
The work you do here will help you identify the specific problems and solutions for each of your three pieces of Prelaunch Content.