Any vehicle can be made into a 4wd, but the expense and work involved are usually more than if you were to just buy the 4wd model.
rear wheel drive
rear wheel drive
It is rear wheel drive.
rear or optional all wheel drive
front wheel drive
Front wheel
front
A 1992 Honda Prelude is ( front wheel drive )
It's not impossible, but it is extremely impractical.
Rear wheel drive, 4x4 is dominate rear wheel drive
It is not a switch, but a speed sensor used by the anti lock braking system to sense rear wheel speed.
The 2003 Ford Expedition has rear wheel drive.