Question: The brown tree snake is a nonnative species found on the South Pacific island of Guam. The brown tree snake population in Guam is so large that it negatively affects the humans there. Which statement best explains why the brown tree snake has flourished in Guam?

  Options: 
 A. There are many animals for food.
 B. There are no natural snake predators.
 C. The climate is ideal for snake reproduction.
 D. The vegetation provides good habitat for hunting.
Answer: B