Final answer:
The police searching Audrey's car without a warrant or probable cause violates the Fourth Amendment, which protects against unreasonable searches and seizures.
Step-by-step explanation:
The police searching Audrey's car without a warrant or probable cause is a violation of the Fourth Amendment. This amendment protects individuals from illegal searches and seizures of their property. According to the Fourth Amendment, government officials are required to have a search warrant, which is a legal document signed by a judge, to conduct a search unless exceptions apply, such as exigent circumstances, consent, or if items are in plain view.
The Supreme Court has ruled that the warrant requirement is limited if a person lacks a "reasonable expectation of privacy" or under certain other conditions. However, in this case, as there was neither a warrant nor probable cause, Audrey's Fourth Amendment rights appear to have been violated.