You are presented with the question "What is a chemical element that is essential for body processes?" and the following answer choices: 
- potash
 - atoms
 - arsenic
 - copper
 - H 2 O
 - sodium
 - dihydrogen monoxide
 - iron

Now knowing that minerals are chemical elements that are essential for body processes and iron deficiency Anemia is associated with low levels of the mineral iron in the body, choose the best answer.


 

        iron 