Final answer:
A search warrant is a legal document that allows the police to search and/or seize persons or property. It is required by the Fourth Amendment to protect individuals from arbitrary intrusion by the government.
Step-by-step explanation:
A search warrant is a legal document signed by a judge that allows the police to search and/or seize persons or property. It is required by the Fourth Amendment of the United States Constitution, which prohibits unreasonable searches and seizures. The purpose of a search warrant is to protect individuals from arbitrary intrusion by the government and to ensure that searches and seizures are based on probable cause as determined by a neutral judge or magistrate.