Answer:
I would have to go with "We are all ruled by natural instincts. ".
Step-by-step explanation:
The animal immediately takes note to the howl, which seems to be its instinct due to how it behaves and acts, which he even calls it a "familiar" sound. As for the other answers, the passage says nothing about leadership, nothing about survival, and I don't really see a connection of "Both the wild and civilization have rules. " to the passage.
I hope this helps!