You are presented with the question "What can mutations lead to in which cells divide out of control?" and the following answer choices: 
- Smoking
 - resistance
 - a disease
 - viruses
 - AIDS
 - bacteria
 - Leptospirosis
 - cigarettes

Now knowing that cancer is a disease in which cells divide out of control and cancer is also caused by a mutation, choose the best answer.


 

   a disease      