The supreme court's decision in "miranda v. arizona" was based mainly on a: the constitutional prohibition against ex post facto laws b: the incorporation of due process rights in the bill of rights so as to make them apply to the states c: the 13th amendment's abolition of slavery d: "amicus curiae" briefs filed by the american civil liberties union nextreset

The Supreme Court's decision in "Miranda v. Arizona" was based mainly on “the incorporation of due process rights in the Bill of Rights so as to make them apply to the states.”

The Miranda v. Arizona case in 1966 was a landmark case in the US justice since it considered that a prisoner has the right against self-incrimination when questioned by the police and the right of an attorney. This case is known as the “Miranda rights” since the US Supreme Court overturned Miranda’s conviction as his rights were not respected. The confession signed by Miranda when being interrogated by police was not admissible in court.  

In this case, option B) is the correct one since the Miranda case is not associated with slavery, “amicus Curiae”  or ex post facto laws.