To paraphrase a poem means to rewrite it in one's own words. It doesn't have to be a poem though, paraphrasing anything means rewriting it.
<span>B. putting a comma in between the complete sentences.
Simply putting a comma between the complete sentence phrases will not keep it from being a run-on sentence</span>
If he had not held a military or civil office in the confederacy
If he could prove that he had not voluntarily borne arms against the US
If he swore an oath of allegiance to the United States