Which amendment is associated with the Exclusionary Rule that evidence obtained unlawfully is inadmissible in court?

• A. Amendment 4
• B. Amendment 5
• C. Amendment 6
• D. Amendment 9

Answer: (A)

The key idea here is that the Exclusionary Rule is a remedy tied to the Fourth Amendment, which protects against unreasonable searches and seizures and requires warrants supported by probable cause. Because it guards privacy and limits police power, when evidence is gathered in violation of those protections, it cannot be used in court. The Exclusionary Rule exists to deter violations and to preserve the integrity of the judicial process. It started by applying to federal cases in Weeks v. United States and was later extended to state courts in Mapp v. Ohio, making it a nationwide safeguard. The other amendments address different rights—self-incrimination and due process (Fifth), right to counsel and a speedy trial (Sixth), or unspecified rights retained by the people (Ninth)—but they do not establish the Exclusionary Rule.