Which is the most likely cause of throat tumors?
cigars Allergies viruses Pesticides rocks doctors the skin water
A B C D E F G H
Lung cancer is a formation of tumors in the lung.
Some viruses result in the formation of malignant tumors.
Which is the most likely cause of throat tumors? (A) cigars (B) Allergies (C) viruses (D) Pesticides (E) rocks (F) doctors (G) the skin (H) water