Which statement accurately contrasts probable cause and reasonable suspicion, and what each justifies?

• A. Reasonable suspicion justifies a brief stop or detention; probable cause justifies an arrest or search.
• B. Probable cause justifies a brief stop or detention; reasonable suspicion justifies an arrest or search.
• C. Reasonable suspicion justifies a search warrant; probable cause justifies a plea bargain.
• D. Probable cause justifies a full-blown trial; reasonable suspicion justifies a summary arrest.

Answer: (A)

Understanding the difference in thresholds is the key. Reasonable suspicion is a lower standard that allows a police officer to briefly stop and detain someone to investigate when there are facts suggesting involvement in criminal activity. It’s enough to justify a short, noncustodial detention and limited questioning, and it may justify a protective pat-down if there’s a reasonable belief of danger.

Probable cause is a higher standard. It requires enough facts and circumstances to lead a reasonable person to believe that a crime has been or is being committed, or that evidence of a crime will be found in a specific place. This level of justification supports more intrusive actions, such as arresting someone or searching a person or property, often with a warrant (unless a recognized exception applies).

So, the statement that reasonable suspicion justifies a brief stop or detention and probable cause justifies an arrest or search correctly captures the contrast between these two standards.