Fact 1: Most carcinogens cause cancer by producing mutations in DNA.

Fact 2: Jet fuels are carcinogens.

Given the two facts above, answer the question "What in an airplane can mutate organisms?" with the following options: 
- an anion
 - Damages them
 - Jet fuel
 - light energy
 - Toxicity
 - Allergies
 - kill them
 - heat


 

   Jet fuel      