Which requirement is essential for obtaining a search warrant?

To obtain a search warrant, it is essential to establish probable cause along with a detailed description of the location to be searched and the items that will be sought. Probable cause means there is a reasonable belief, based on facts and circumstances, that evidence of a crime will be found in the specified location. This legal standard protects individuals' rights by ensuring that search warrants are not issued arbitrarily or without justification.

Additionally, the requirement for a clear description allows law enforcement to conduct their search within the confines of the warrant, thereby limiting intrusions into privacy. This framework supports the Fourth Amendment of the U.S. Constitution, which protects citizens from unreasonable searches and seizures.

The other options presented do not align with legal requirements for obtaining a search warrant, thus highlighting the importance of the actual criteria necessary for this legal procedure.