D) Both the poem and the essay would be appropriate to include.
When trying to persuade readers, it is best to use as many rhetorical devices as possible. The rhetorical devices are ethos, pathos, and logos. Ethos is an appeal to ethics. Pathos is an appeal to emotion. And, logos is an appeal to logic. Thus, by including a poem, most likely, pathos will be included because of how poetry is emotional. Additionally, by including facts that support your ethical position of ending child labor, readers’ logical next step would be to support ending it, as well. That said, both the poem and essay would be appropriate to include.
It is appropriate for a research paper because it is not opinion based or based in fantasy, it is a real thing you can do research on.
A Pop critic would review a new version of a flat-screen television.