Read the excerpt from “Raymond's Run.”

There is no track meet that I don’t win the first-place medal. I use to win the twenty-yard dash when I was a little kid in kindergarten. Nowadays, it’s the fifty-yard dash. And tomorrow I’m subject to run the quarter-meter relay all by myself and come in first, second, and third. The big kids call me Mercury ‘cause I’m the swiftest thing in the neighborhood.
Which sentence is an example of indirect characterization?

My younger sister was clearly frightened by the booming thunder and flashes of lightning.
My friend often displays childish and immature behavior when he doesn’t get his way.
I couldn’t believe how surprised and overjoyed my mother was when she received the news.
I am quick to say thank you and return the favor if someone does something nice for me.