The reasons given by the Supreme Court in the Dred Scott ruling, using Chief Justice Taney's justification, are:
B. Dredd Scott had no right to sue because he was not a citizen. D. Dredd Scott had no rights to which white men had to respect. F. Congress could not exclude slavery from the federal territories.
These options reflect the core elements of the Court's decision, particularly regarding citizenship and the rights of African Americans, as well as Congress's authority over slavery in federal territories.