Question

illegally obtained evidence is inadmissible in all criminal prosecutions.
mapp v. ohio
wolf v. colorado
employment division v. smith
katz v. united states

Explanation:

The statement describes the exclusionary rule applied to all state and federal criminal prosecutions. Mapp v. Ohio (1961) extended the federal exclusionary rule to state courts, holding illegally obtained evidence is inadmissible in all criminal prosecutions. Wolf v. Colorado previously allowed states to use such evidence, Employment Division v. Smith focused on religious freedom, and Katz v. United States defined Fourth Amendment privacy protections.

Answer:

A. Mapp v. Ohio