Which of the following is considered a warrantless search?

A warrantless search is generally defined as a search conducted by law enforcement without a warrant issued by a judge. Open fields are considered outside of the curtilage, or the immediate land surrounding a home, and therefore do not carry the same expectation of privacy as the home itself. This means law enforcement can enter and search open fields without a warrant, as these areas are not protected under the Fourth Amendment in the same way that private homes are.

In contrast, a search warrant is a legal document authorized by a judge that permits law enforcement to search a specific location for evidence of a crime, which does not fall under the definition of a warrantless search. Body cavity searches and strip searches, on the other hand, typically require certain justifications and adherence to protocols concerning privacy and consent, which usually necessitate legal justifications that can include warrants depending on the situation. Thus, they are not classified as warrantless searches.