These two poems deal with a similar subject matter, which is the idea of death and the afterlife. However, they both approach the subject from a slightly different perspective. In the case of Whitman, he refers to death simply as a return to earth. For him, death holds spiritual meaning due to the connection of humans to the environment. On the other hand, Dickinson talks about an "afterlife" more concretely, as she thinks of it as a spiritual rebirth.
I believe the correct answer from the choices listed above is option B. The option that would best make the text suitable for a slide in a presentation would be the inclusion of very detailed statistics and examples. Hope this answers the question. Have a nice day.