If a police officer wanted to search someone’s home and the homeowner refused, which of the following would the police officer need to have in order to search the person’s home against their will?

The police officer would need to have a search warrant. A search warrant is a court order that a magistrate, judge or Supreme Court official issues to authorize law enforcement officers to conduct a search of a person, location or vehicle for evidence of a crime and to confiscate any evidence they find. However, police officers generally do not need a search warrant to search someone's body for a gun or other illegal paraphernalia. 

Require the nobles and clergy to pay taxes.