Answer:
The details show how a character treats nature, revealing the theme "we must take care of the things that we love."
Step-by-step explanation:
In the given legend "The Pet Rabbit," from the Sioux Indian people, the speaker talks of a girl's relationship with her pet rabbit. And in that relationship, we can know how the Indians treat nature and how they care about all living and non-living things.
In treating the rabbit as a "babe", giving him moccasins, and even sharing her robe with the animal, we can understand how the girl treats nature. To her, the rabbit is another companion, not an animal. This shows the theme of caring for the things that we love and care for.
Thus, the correct answer is the fourth option.