Which is required to arrest a person for a crime?

• A. Probable cause to arrest (crime - person committed).
• B. Reasonable suspicion to stop.
• C. Mere suspicion.
• D. Probable cause to search.

Answer: (A)

The essential idea here is that arresting someone requires probable cause. Probable cause means there are facts and circumstances known to the officer, or within the officer’s knowledge, that would lead a reasonable person to believe that the suspect has committed, is committing, or is about to commit a crime. It’s a standard that sits between a mere hunch and proof beyond a reasonable doubt, and it makes an arrest permissible without a warrant in many typical scenarios.

This differs from stopping someone, which only requires reasonable suspicion—a lower threshold that allows brief detentions to investigate further, not a full arrest. Mere suspicion is not enough to justify any detention or arrest. Probable cause to search is a separate standard used to justify searches, often via a warrant or under certain exceptions, and is not the same as the standard needed to arrest.