Fact 1: Oncogenes promote the division of cells with damaged DNA.

Fact 2: Oncogenes An oncogene is a gene that is capable of causing cancerous change.

Given the two facts above, answer the question "What promotes the division of cells with damaged DNA?" with the following options: 
- PDAs
 - chemicals
 - smoking
 - lmestone
 - A drug.
 - acid rain
 - bacteria
 - cancer


 

        cancer 