Final answer:
The "special circumstances test" from Powell v. Alabama and applied more broadly in Betts v. Brady evaluates the necessity for providing counsel in particular cases based on the circumstances of the defendant. It examines whether the circumstances are such that the defendant's fundamental right to a fair trial would be denied if they did not have access to counsel.
Step-by-step explanation:
The "special circumstances test" from Powell v. Alabama case and applied more broadly in Betts v. Brady case is a legal standard that evaluates the necessity for providing counsel in particular cases based on the circumstances of the defendant. In Powell v. Alabama, the Supreme Court held that the defendants, who were poor and illiterate, were entitled to counsel in their capital case due to the special circumstances surrounding their indigence and the severity of the charges. This test was later expanded in Betts v. Brady to include felony cases where the defendant faced potential jail time. The test examines whether the circumstances are such that the defendant's fundamental right to a fair trial would be denied if they did not have access to counsel.