Final answer:
The pair of Supreme Court cases that upheld the right to counsel for defendants in criminal cases are Gideon v. Wainwright (1963) and Miranda v. Arizona (1966).
Step-by-step explanation:
The correct answer is B. Gideon v. Wainwright (1963) and Miranda v. Arizona (1966).
Gideon v. Wainwright was a landmark Supreme Court case that established the right to counsel for defendants in criminal cases, regardless of their ability to pay. In this case, the court overturned a previous decision and declared that the Sixth Amendment guarantees the right to legal representation.
Miranda v. Arizona is another important Supreme Court case that upheld the right to counsel. It established the requirement for police to inform suspects of their rights before questioning them, known as the Miranda warning.