In Terry v. Ohio, the U.S. Supreme Court said that ________. The 4th Amendment requires that the police need probable cause to stop a person. A person may be stopped upon a reasonable suspicion that criminal activity may be afoot. The police may stop and talk to a person on the street but cannot arrest them. All of the above? 1) The 4th Amendment requires that the police need probable cause to stop a person 2) A person may be stopped upon a reasonable suspicion that criminal activity may be afoot 3) The police may stop and talk to a person on the street but cannot arrest them 4) All of the above