The correct answer is B.
The Due Process Clause is related to the administration of justice in the US and states that every suspect is entitled to a fair trial before prosecution. In order to qualify as a fair trial, it needs to follow certainf regulations that are specified several pieces of US federal legislation.
Escobe v. Illinois was a landmark decisions enacted by the US Supreme Court in 1964, which considered that the provisions included in the Sixth Amendment to the US Constitution had been violated because the suspect was not permitted to exercise the right of being counseled by an attorney during police interrogations.
Also, Gideon v. Wainwright is another landmark US Supreme Court decision enacted in 1963. It established that the states must provide a public defender to criminal defendants who are unable to afford an attorney by themselves, in trials where the suspect faces the possibility of imprisonment.