Sarah is learning about human-harnessed electricity as well as naturally-occurring electricity. Sarah comes in contact with many forms of electricity each day. Which is an example of Sarah coming in contact with naturally-occurring electricity?
A) Sarah walks quickly across the carpet in socks and feels a small shock on her foot.
B) Sarah felt a small sting on her finger when she changed the light bulb on her lamp.
C) Sarah was lightly shocked when she inserted the plug of her lamp in the wall socket.
D) Sarah accidentally left her curling iron plugged in and burned her hand on the metal.