In the Dred Scott v. Sandford ruling, the Supreme Court, led by Chief Justice Roger B. Taney, provided several key justifications. Based on your options, the main reasons given in the ruling included:
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 elements illustrate that the Court ruled that African Americans were not considered citizens and thus could not sue in federal court. The Court also denied the federal government's authority to regulate slavery in the territories, further entrenching the institution of slavery in the United States.