You are presented with the question "What does sharpening an item do?" and the following answer choices: 
- changes shape
 - alters smell
 - changes color
 - Relieve pain
 - focusing a lens
 - maintains shape
 - duplicate itself
 - lowered energy cost

Now knowing that sharpening an object causes that object to change shape and an object is an item in the real world, choose the best answer.


 

 changes shape        