Conducting a three-year sensitivity analysis

I am required to complete a three year sensitivity analysis based on the three year forecast I have put together (in Excel). I am expected to put various aspects into this sensitivity forecast including worst case, base case and best case scenarios.

Description is below (plus whatever else is required to meet requirements).

"a. Applied to forecast to outline potential circumstances that may divert the P&L from its proposed trajectory To cover the three scenarios
i. The best case (the plan) Uses the P&L forecast.
ii. Best case. Using the plan as the baseline. What could happen if student numbers increase, or prices increase beyond the plan. Costs may reduce due to a number of factors, such a greater efficiency due to a new IT system. Please remember the key variables.
iii. The worst case. Pandemic or global event, reduction in learners, poor market forces bringing down prices. Also consider the variables."

Please quote me.
Regards
Mark