Fact 1: Vinegar can cause harm to the eyes.

Fact 2: Inside the eye, at the back, is the retina.

Given the two facts above, answer the question "what can vinegar cause harm to?" with the following options: 
- humans
 - organisms
 - an object
 - h2o
 - retina
 - oxygen
 - salt
 - plants


 

     retina    