You are presented with the question "What can cause harm to the most fragile part of the face?" and the following answer choices: 
- Pesticides
 - water
 - cloudy days
 - cigarettes
 - light touches
 - smoking
 - vinegar
 - viruses

Now knowing that vinegar can cause harm to the eyes and eyes: The eyes and their surrounding area are the most fragile part of the face, choose the best answer.


 

       vinegar  