You are presented with the question "What is the most important product in Iowa?" and the following answer choices: 
- Nebraska
 - Des Moines
 - Windmills
 - sugar
 - copper
 - food
 - Corn
 - paper

Now knowing that ethanol is produced by alcoholic fermentation of the glucose in corn or other plants and of course, ethanol is important to Iowa, choose the best answer.


 

       Corn  