Final answer:
Probable cause is the correct answer.
Step-by-step explanation:
The correct answer is Probable cause.
Probable cause is a legal term that refers to the reasonable belief that a crime has been or is being committed, based on facts and circumstances. It is a requirement for obtaining a search warrant or making an arrest.
In the given options, Miranda rights, exclusionary rule, and reasonable suspicion are all related to law enforcement and criminal justice, but they do not specifically pertain to the concept of prohibiting searches. Only probable cause directly addresses the requirement for search warrants and is the answer that comes first in the given list.