Which case established the requirement that suspects be informed of their rights before police questioning?

• A. Gideon v. Wainwright
• B. Mapp v. Ohio
• C. Miranda v. Arizona
• D. Roe v. Wade

Answer: (C)

The main concept tested is the obligation to inform a person of their rights before police questioning, known as Miranda rights. In the landmark ruling, the Supreme Court held that whenever someone is in custody and being questioned, police must give warnings about the right to remain silent, that anything said can be used against them, and the right to consult with an attorney (with free legal counsel if they cannot afford one). If those warnings aren’t provided and a suspect makes statements, those statements may be excluded from evidence because the waiver of rights wouldn’t be considered voluntary, knowing, and intelligent. This rule exists to protect against self-incrimination and to ensure fair process during interrogation. The case that established this is rooted in a confession obtained without the warnings, and the Court required that such interrogations either pause for the rights advisement or proceed only after a valid waiver is obtained. Other listed cases deal with different protections: one concerns the right to counsel in trials, another reinforces the exclusionary rule for illegally obtained evidence, and the last addresses abortion rights; none establish the pre-questioning rights advisement.