What case established the requirement for an informant's tip to include underlying circumstances for credibility?

The correct answer is the case of Aguilar v. Texas. This landmark decision established that for an informant's tip to be credible and serve as a basis for probable cause in obtaining a search warrant, it must include sufficient underlying circumstances. The court held that simply providing a tip was not adequate; instead, the informant's reliability and the basis for the informant's knowledge must be detailed. This ruling aimed to ensure that law enforcement actions are supported by credible information rather than vague assertions, ultimately reinforcing the protection against unreasonable searches and seizures.

The other cases mentioned do not specifically address the requirements for an informant's tips. Miranda v. Arizona focuses on the rights of the accused during police interrogation, while Beck v. Ohio addresses the issue of probable cause for arrests without a warrant. Terry v. Ohio is centered on stop-and-frisk procedures and the standards for reasonable suspicion. Each of these cases contributes to the broader context of search and seizure laws, but Aguilar v. Texas is specifically pivotal in setting the criteria for evaluating informant credibility.