Which of the following is not a key element of a travel narrative? A. motive B. author C. theme D. topic

Well, the theme is where you are which is somewhat important. The motive is very important to traveling. Topic is eh. The author is the writer ... ? I'd say author isn't as important as the motive, theme, or topic. Author or topic would be your answer, and good luck.

A topic is your best answer. You need to have a motive to go somewhere. You need to have an author for a narrative and the theme is the biggest part of a travel story.