Fact 1: Threatening behavior by predators causes a porcupine to extend its quills.

Fact 2: Fishers are one of the few specialized predators on porcupines.

Given the two facts above, answer the question "What will a porcupine do when it feels a fisher is displaying threatening behavior?" with the following options: 
- bite the fisher
 - decreases its bodily water
 - Change colors
 - extend it's quills
 - kill them
 - the body's largest organ
 - back away
 - fight the fisher


 

    extend it's quills     