The primary purpose of the passage is to provide an answer to which one of the following questions? A. How should the legal protection of Native American burial grounds be enhanced? B. What characteristics of Native American burial grounds enhance their chances for protection by the law? C. In what ways does the law protect the rights of Native Americans in regards to the contents of ancestral graves? D. Why are the courts concerned with protecting Native American burial grounds from desecration? E. By what means can Native Americans establish their rights to land on which their ancestors are buried?