The correct option is "b. represented himself in court."
The Sixth Amendment to the United States Constitution codifies rights related to criminal cases in federal courts. The Supreme Court has ruled that these rights are so fundamental and important that the Fourteenth Amendment protects them in state courts by the due process clause.
The amendment expresses the following: "In all criminal cases, the accused shall enjoy the right to be publicly and expeditiously tried by an impartial jury of the State and district in which the offense was committed, a district that shall have been previously determined by law; as to be informed about the nature and cause of the accusation, to be sued with witnesses against him, to compel witnesses to appear on his behalf and to have the assistance of Legal Counsel for his defense. "
