Read the excerpt from The Land.

I loved my daddy. I loved my brothers too. But in the end it was Mitchell Thomas and I who were most like brothers, with a bond that couldn't be broken. The two of us came into Mississippi together by way of East Texas, and that was when we were still boys, long after we had come to our understanding of each other. Seeing that we were a long way from our Georgia home and both of us being strangers here in Mississippi, the two of us depended on each other and became as family.

What is the purpose of this narration?

to explain how a character is completing a task
to provide backstory about an important relationship
to give a detailed description of a significant event
to reveal a character’s true emotions about an event