Both Common Sense and Patrick Henry's speech illustrate how figurative and emotional language contribute to the author's purpose as well as to:
A. a parallel structure
B. the author's purpose
C. the counterargument
D. rhetorical questions
Common Sense was Thomas Paine's thought process as to why it only makes sense for the colonies to be separate. Thus I believe the answer may be D because it deals with rhetorical strategies, or questions. I hope that this answer helped.
