You are presented with the question "what helps make up the excretory system?" and the following answer choices: 
- sugar
 - gills
 - h2o
 - lungs
 - aorta
 - bowel
 - fungi
 - honey

Now knowing that organs of excretion make up the excretory system and excess estrogen is excreted in the bowel, choose the best answer.


 

      bowel   