Fact 1: Cancer is a disease in which cells divide out of control.

Fact 2: Leukemias are cancers of the blood.

Given the two facts above, answer the question "what is a disease in which cells divide out of control?" with the following options: 
- AIDS
 - fever
 - mitosis
 - cigarettes
 - diseased cells
 - leukemia
 - Smoking
 - parasites


 

      leukemia   