Fact 1: Vinegar can cause harm to the eyes.

Fact 2: Eyes: The eyes and their surrounding area are the most fragile part of the face.

Given the two facts above, answer the question "What can cause harm to the most fragile part of the face?" with the following options: 
- Pesticides
 - water
 - cloudy days
 - cigarettes
 - light touches
 - smoking
 - vinegar
 - viruses


 

       vinegar  