You are presented with the question "Amphibians also have immune cells arranged to smell and taste what?" and the following answer choices: 
- flies
 - Allergies
 - tadpoles
 - heat produced
 - an object
 - Chlorophyll
 - chemicals
 - water

Now knowing that amphibians have sense organs to smell and taste chemicals and amphibians also have immune cells arranged into organs, choose the best answer.


 

       chemicals  