You are presented with the quiz "Which product is widely used today to make fuel for cars?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "ethanol is produced by alcoholic fermentation of the glucose in corn or other plants" and "methanol and Ethanol are two types of alcohol fuels used in cars". 

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


 

  corn         