What element of literary nonsense is present in this excerpt from "How the Animals Lost Their Tails and Got Them Back Traveling from Philadelphia to Medicine Hat" by Carl Sandburg?

Which of the following factors most consistently contributes to the speaker’s believability? a the age and experience of the speaker b the physical environment in which the speech is delivered c the sincerity, knowledge, and trustworthiness of the speaker d the position of the thesis statement in the speech