Which condition allows a peace officer to make an arrest without a warrant?

The condition that allows a peace officer to make an arrest without a warrant is when probable cause exists for a felony. Probable cause refers to a reasonable belief, based on facts, circumstances, and evidence, that a person has committed a crime or is about to commit a crime. This standard is essential in law enforcement as it justifies the arrest without the need for a warrant, which is important in situations where waiting for a warrant could result in the loss of evidence or pose a danger to public safety.

In this scenario, if an officer observes behavior or has information indicating that a person is committing or has committed a felony, they possess the necessary legal grounds to execute an arrest immediately. This principle is rooted in the necessity for timely law enforcement action and the protection of the community.

The other options do not meet the legal standard required for a warrantless arrest. Reporting suspicious behavior might prompt an investigation, but it does not equate to probable cause. A mere hunch lacks the factual basis needed to legally justify an arrest. Lastly, the fact that someone is unwanted in an area does not automatically establish probable cause for a crime, making it insufficient for a warrantless arrest.