You are presented with the question "Plants cell walls are made of " and the following answer choices: 
- fiber
 - keratin
 - alveoli
 - cations
 - matter
 - CO 2
 - porous
 - Cane.

Now knowing that plants are multicellular eukaryotes with cell walls made of cellulose and basically, fiber is cellulose , choose the best answer.


 

 fiber        