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

Fact 2: Fishers are predators that can eat porcupines.

Given the two facts above, answer the question "What might a porcupine do if threatened by a fisher?" with the following options: 
- dig in the dirt
 - Decrease bodily water
 - killing insects
 - lower its quills
 - kill them
 - humans disturb it
 - show its teeth
 - show its quills


 

        show its quills 