You are presented with the question "Cells that divide uncontrollably may form what?" and the following answer choices: 
- air
 - epidermal
 - fever
 - bacteria
 - cell phones
 - cancer
 - illness
 - water

Now knowing that cells that divide uncontrollably may form a tumor, or abnormal mass of cells and cancer is a malignant tumor, choose the best answer.


 

      cancer   