Final answer:
The judge makes the final determination that probable cause exists when applying for a warrant, upholding the legal standard for searches, seizures, and arrests.
Step-by-step explanation:
The individual responsible for making the final determination that probable cause exists when applying for a warrant is not the requesting deputy, the defendant, or even the prosecutor; it is the judge who bears this responsibility.
In the context of criminal justice, it is the judge or a neutral magistrate who reviews the evidence presented by law enforcement or prosecutors and decides whether it meets the legal standard of probable cause. This concept is a crucial part of the American legal system, ensuring that searches, seizures, and arrests are conducted legally.