Fact 1: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells.

Fact 2: And tumor cell means that it's an abnormal cell.

Given the two facts above, answer the question "what can abnormal cells do uncontrollably?" with the following options: 
- falls ill
 - migrate
 - sweating
 - Smoking
 - die
 - illness
 - run away
 - divide


 

        divide 