Fact 1: Abattery converts chemical energy into electrical energy.

Fact 2: Electrical energy can be converted into kinetic energy and heat energy by an electric motor.

Given the two facts above, answer the question "What can convert chemical energy into kinetic energy" with the following options: 
- a magnet
 - a vacuum
 - a windmill
 - a battery
 - arteries
 - barnacles
 - animals
 - engines


 

    a battery     