Answer:
D. It brings the writer into the sentence.
Explanation:
'Bringing the writer into the sentence' in this context means that the writer is inserting his/her own thought or opinion to the sentence for the readers to read.
We can see this in this part of the excerpt:
"I believe that Common Sense presents arguments to convince the colonists of . . ."
At at hat time, Thomas Paine want to voiced up his personal opinon to persuade the public to join the revolutionary effort that eventually led to American independence from the British government.