You are presented with the question "What is used to remove lead from the stomach?" and the following answer choices: 
- Vomiting reflex
 - heat energy
 - Fish hook
 - layers of fat
 - an electron microscope
 - evaporation
 - digestion
 - acid

Now knowing that the vomiting reflex is used to remove toxic material from the stomach before it is absorbed and finally, lead is toxic, choose the best answer.


 

 Vomiting reflex        