Read the excerpt from Jungle Book: Mowgli's Brothers. "Now," he said, "I will go to men. But first I must say farewell to my mother"; and he went to the cave where she lived with Father Wolf, and he cried on her coat, while the four cubs howled miserably.

Mowgli returns to the wolves before stepping into man’s world. This detail best supports which theme?

Hard work can overcome obstacles.
Good always conquers evil.
Families are important.
Nothing lasts forever.