You are presented with the question "What converts chemical energy into mechanical energy?" and the following answer choices: 
- kinetic energy
 - Marine engine
 - driving
 - some invertebrates
 - sea urchins
 - vehicles
 - rockets
 - animal transport

Now knowing that an automobile engine transforms chemical energy into mechanical energy and marine engines, with very few exceptions, are automobile engines converted to marine use, choose the best answer.


 

  Marine engine       