Final answer:
The correct term for a division 2 material that can cause cancer is 'toxic'. Carcinogens are considered toxic because they increase the incidence of cancer, often through mutations in DNA.
Step-by-step explanation:
Carcinogenicity refers to the ability of a substance to cause cancer, which is indicated by the growth of cells dividing out of control. The question asks to fill in the blank for the following statement: 'Carcinogenicity (cancer causing) is a division 2 toxic material.' The correct answer is option 1) toxic, as carcinogens are identified as substances that can potentially increase the incidence of cancer, and most carcinogens are considered mutagens.