The Correct answer is "It keeps the traditions and cultural history of the Kiowa alive".
Storytelling is a very important part of the Kiowa culture. It is a common practice among all of the members of the tribe. It is a way which relatives and friends come together. During these meetings, the knowledge of the culture is passed from older to younger generations in a very detailed way. This achieves the purpose of maintaining the culture's traditions and history alive throughout time.
Bruno and shmuel are the protagonists because they are mostly mentioned in the story