Final answer:
Terry v. Ohio is the case that forms the foundation for the law governing police actions based on reasonable suspicion.
Step-by-step explanation:
The case that forms the foundation for the law governing police actions based on reasonable suspicion is Terry v. Ohio. In this case, the United States Supreme Court established the legal concept of stop and frisk. The court held that police officers may briefly stop and detain an individual if they have reasonable suspicion that the person is involved in criminal activity, and they may conduct a limited search for weapons if they believe the person poses a threat.
Learn more about Terry v. Ohio and the law governing police actions based on reasonable suspicion.