Answer:
I would predict that the parking lot surrounded by strip malls would return to forest sooner. This is because the strip mall surrounding the parking lot is likely to be developed or built on before the forest surrounding the other parking lot. As a result, the parking lot in the forest would be more likely to remain as a parking lot for a longer period of time. Additionally, the forest ecosystem may be more resilient and able to reclaim the parking lot over time, while the parking lot surrounded by strip malls may not have the same natural processes in place to facilitate its return to a natural state.