A student uses a magnet to place a picture on the refrigerator door. Which statement explains how the magnet can stick to the refrigerator without directly touching it?
The force of gravity between the refrigerator and the magnet is strong enough to cause the magnet to stick.
The picture's magnetic field attracts both the magnet and the refrigerator.
Friction acts through the picture and allows the magnet to stick to the refrigerator.
The magnet's magnetic field can act at a distance, and influence the metal of the door through the picture.