PLEASE ANSWER!

Why should writers include references to their research in an argument?

It shows they do not have original thoughts on the issue.
It adds credibility to the argument they wish to prove.
It distracts readers from the counterclaims of others.
It focuses the audience on the insignificant details.

Study the quote to answer the question:

"The tracking of online activity is not just a privacy issue," claims activist Hughes, "But an economic and political minefield."

What is wrong with the format of this quote?

It is missing one set of quotation marks.
The word "But" should not be capitalized.
It is missing an internal citation for the source of the quote.
The comma after "issue" should appear after the quotation mark.