Sandburg's "How the Animals Lost Their Tails and Got Them Back raveling from Philadelphia to Medicine Hat" uses onomatopoeia?

The correct answer is this one: "They went to the railroad stations and bought tickets for the fast trains and the slow trains and even the trains that back up and run backward instead of where they start to go." This is the line of the excerpt from Carl Sandburg's "How the Animals Lost Their Tails and Got Them Back Traveling from Philadelphia to Medicine Hat" that uses repetition and alliteration. hit me up if u need more answers