The purpose of a agrumentative essay is to defend a debatable position on a spefic issue so the last one is the answer.
Answer:
C) One passage provides objective economic data about the river while the others tell the story of two boys adventuring on its waters.
Explanation:
I believe the answer is C because the first passage provides factual information about the Mississippi River while the other simply uses the river as the story's setting.
This sentence would probably be a citation in APA style. Citations on research papers are very important since they give due credit to the original owner of the statement. Statements that don't have citations tells the readers that those statements are of the researcher/s alone which would be a problem for them if found out that it wasn't theirs to begin with. This would result to a work of plagiarism which is a grave sin in constructing research papers and is more equated with the act of stealing.
It’s not really that confusing..