Regarding travel literatute, a tavelogue is a form of written record of an author's travelling experiences. It may include:
a person's account of his or her experiences (option B);
descriptions of sights, cultures, climates, and lands (option D);
and drawings, photographs, maps, or memorabilia (option E).
It may also be a talk, a lecture and even a narrated motion picture about travel. In the case of talks and lectures, they are usually accompanied by a film or slides
.
Travelogue is a literary genre that tells about travel experiences of the autor. In this case, options B, D and E describe the literary elements present in a travelogue.
Yes, I'm not sure how to explain it but it needs to be there because there is a prepositional phrase (i think that is one) right there. But yes, it is necessary.
