The primary purpose of the passage is to______
A. describe in detail one research study regarding the impact of history textbooks on children’s attitudes and beliefs about certain cultures
B. describe revisions that should be made to United States history textbooks
C. discuss the difficulty of presenting an accurate history of the United States
D. argue that textbooks used in schools stereotype Native Americans and influence children’s attitudes
E. summarize ways in which some textbooks give distorted pictures of the political systems developed by various Native American groups