The correct option is A Elevator in a hospital.
Option A - ramp to load a truck with luggage - this is clearly an inclined plane where we are using it reduce the effort required to load the luggage into the truck.
Option B - Elevator in a hospital - this is being pulled in a vertical direction, and thus does not make it an inclined plane.
Option C - Winding road with a subtle slope built around a hill. This is done usually so that the vehicles can climb the hill easily and it is an inclined plane.
Option D - Gangplank used to unload the cargo of a ship, this functions similar to the ramp we discussed in option A so this is also an inclined plane.
Option B is the one where it is not an application of an inclined plane.