You are presented with the quiz "What type of energy does a wind turbine use to convert wind energy?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "awindmill converts wind energy into electricity primarily by using mechanical energy" and "today, new kinds of windmills, called wind turbines, generate electricity". 

So, what's the best answer to the question?


 

   mechanical        