What distinguishes reasonable suspicion from probable cause in policing?

• A. Probable cause applies only to arrests, while reasonable suspicion applies only to searches.
• B. Reasonable suspicion and probable cause are identical in warrant requirements.
• C. Reasonable suspicion justifies a brief stop based on articulable facts; probable cause requires a fair probability of crime to arrest or search.
• D. Reasonable suspicion is enough for a full-blown arrest, but probable cause is not.

Answer: (C)

The main idea here is the level of justification and what each standard allows an officer to do. Reasonable suspicion is a lower threshold used to justify a brief stop and limited investigation when the officer has specific, articulable facts that would lead a reasonable person to think criminal activity is afoot. It’s enough to briefly detain someone to ask questions, check a description, or verify information, and it can justify a protective frisk if there’s a reasonable concern for the officer’s safety.

Probable cause, on the other hand, is a higher standard. It requires a fair probability that a crime has been committed or that evidence of a crime will be found in a particular place or on a person. This level of certainty supports more intrusive actions, such as making an arrest or conducting a search (often with a warrant, though certain exceptions apply).

So the distinguishing idea is: reasonable suspicion justifies a brief stop based on specific, articulable facts; probable cause requires a fair probability of crime to arrest or search.