Why does the author use a rhetorical question in this passage? "Barbara Jordan Remarks on Impeachment, July, 1974" by Barbara Jordan Has the President committed offenses, and planned, and directed, and acquiesced in a course of conduct which the Constitution will not tolerate? That's the question. We know that. We know the question. We should now forthwith proceed to answer the question. It is reason, and not passion, which must guide our deliberations, guide our debate, and guide our decision.

-to explain the need for fiery debate
-to assert the guilt of the president
-to ponder the purpose of impeachment
-to charge the executive with crimes

The author uses a rhetorical question in this passage to ponder the purpose of impeachment.