How should the driver of the silver vehicle respond, when the driver of the dark vehicle wants to park his vehicle in reverse between two vehicles next to the sidewalk?

Enter the parking by himself and prevent the driver of the dark vehicle from parking.
Slow down or even stop and allow the driver of the dark vehicle to finish parking.
Continue driving normally, as if he did not identify the intentions of the other driver.
Drive closer to the dark vehicle, honk, and overtake it quickly.