Fact 1: Vinegar can cause harm to the eyes.

Fact 2: Vinegar is dilute acetic acid.

Given the two facts above, answer the question "What can acetic acid do to the eyes?" with the following options: 
- treat cataracts
 - harm them
 - Relieve pain
 - Dehydration
 - kill them
 - hydrate them
 - protect them
 - cleanse them


 

  harm them       