Answer:
B & C
Step-by-step explanation:
A cannot be the answer, since in Stanza 2, "Like the timid hare who did note see" is a line, which introduces the story.
B is an answer, since it directly addresses the reader, "When to your ears come tales of crumbling".
C is also an answer, as the story of the timid hare did not continue, as the writer is just trying to talk to the reader in this stanza, about the lesson of the tale.
D is not an answer, since in Stanza 4 is was made clear why the beasts ran away: "And saved the frightened, fleeing herd."
I'm pretty sure these are the answers, however they could be incorrect. Please update if they were right or not!