Which of the following is not a way of right of entry?

In the context of the right of entry, a floor inspection does not constitute a recognized method of gaining access for investigative purposes, such as those employed by fire investigators or law enforcement. The term "floor inspection" typically refers to an examination or evaluation of a specific area of a building, rather than a formal or legal mechanism for entering a structure.

By contrast, consensual searches, administrative search warrants, and criminal search warrants are all established methods that allow investigators to enter premises legally. A consensual search is conducted when a property owner or occupant grants permission for the search. Administrative search warrants are issued under the authority of regulatory agencies to conduct inspections, typically to ensure compliance with safety codes or regulations. Criminal search warrants are obtained through the judicial system and provide law enforcement the legal authority to enter and search premises when there is probable cause to believe that evidence of a crime may be found. Each of these methods is characterized by legal protocols that protect the rights of property owners while enabling investigators to carry out their duties.