You are presented with the question "what can cause harm to the eyes?" and the following answer choices: 
- hypothyroidism
 - acetic acid
 - juice
 - water
 - Pesticides
 - heating liquids
 - light
 - rays or beams

Now knowing that vinegar can cause harm to the eyes and it is this bacteria which turns alcohol into acetic acid, the main component of vinegar, choose the best answer.


 

  acetic acid       