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.

Squeaky’s description of herself in this passage shows readers that she

A. has some self-doubt.
B. admires the big kids.
C. thinks very little of others.
D. is very self-confident.