In "The Battle of the Frogs and Mice," the portrayal of the gods draws from traditional Greek literature primarily through their inconsistent interaction with mortals. Thus, the correct answer is:
C. The gods are shown as being inconsistent in their interaction with mortals.
This inconsistency reflects the complex nature of divine-human relationships often depicted in Greek mythology and literature, where gods may intervene in human affairs unpredictably or for their own amusement.