Q: Fact 1: The vanes rotating in an electric fan causes air to move. Fact 2: Air is mostly nitrogen and oxygen. Given the two facts above, what moves because of vanes rotating in an electric fan?

Available options:
(1). nitrogen and oxygen
(2). sun rays
(3). microwaves
(4). some mammals
(5). living things
(6). animals with backbones
(7). kinetic energy
(8). neutrons
A:
(1).