What rule dictates that evidence obtained through unconstitutional activity is inadmissible in court?

The Exclusionary Rule is the legal principle that stipulates evidence collected or analyzed in violation of a defendant's constitutional rights cannot be used in a court of law. This rule aims to deter law enforcement from conducting illegal searches and seizures, ensuring that the rights guaranteed by the Fourth Amendment are upheld. By excluding such evidence, the rule not only protects the rights of individuals but also promotes judicial integrity by discouraging unlawful practices.

The other options, such as the Inclusionary Rule, Due Process Rule, and Miranda Rule, pertain to different aspects of law. For instance, the Inclusionary Rule is not a recognized legal principle, while the Due Process Rule relates more broadly to fair treatment through the normal judicial system. The Miranda Rule specifically addresses the requirement for informing suspects of their rights during arrest, but does not govern the admissibility of evidence obtained in violation of constitutional protections.