I am guessing that the divergent opinions you found in the passage are in paragraph 2. The author believes that the power of the Supreme Court has been used to benefit Native Americans, while others doubt this assertion, referencing patronizing Court opinions and rejection of Native values. The problem with answer choice C is that these opinions are not reconciled. To reconcile is to reach a compromise, or to bring these two groups into agreement. That is not what happens. Rather, the author continues to argue for his/her point, and supports it with evidence in the last two paragraphs. This is why E is the correct answer.
