Why is E correct? Why is D incorrect?

@Ryan-Mahabir, (D) is incorrect because Passage A does not employ any rhetorical questions, and Passage B includes one question that could be seen as rhetorical (lines 50-53) but it is not used to advance the argument. (E) is correct because both passages discuss alleged misunderstandings - Passage A addresses the misconception that a flat tax is unfair (lines 9-16) and Passage B addresses the misconception that progressive taxes are unfair (lines 30-34),