Read the following context and choose the best option to answer the question.
Context: We met Jessie Royer , who also runs the Iditarod each year . She talked to us about her dogs , and even hooked them up to a four - wheeler that was turned off , but in neutral and they ran her around the kennels at 20 mph ! It was really cool .
Question: What kind of environment will the dogs be running in ?
Options: 
A. desert
B. hot weather
C. None of the above choices .
D. Frozen tundra


D