Which statement best describes the difference between reasonable suspicion and probable cause?

Which statement best describes the difference between reasonable suspicion and probable cause?

• A. Reasonable suspicion is a higher standard than probable cause.
• B. Probable cause is enough for a brief stop, while reasonable suspicion requires a warrant.
• C. Reasonable suspicion is enough to arrest someone without a warrant.
• D. Reasonable suspicion is a lower, articulable belief that a person is involved in criminal activity and justifies a brief stop; probable cause is a higher standard that would lead a reasonable person to believe a crime has been or is being committed, justifying an arrest or search.

Answer: (D)

The difference hinges on how much proof is required and what it allows police to do. Reasonable suspicion is a lower, articulable belief that a person is involved in criminal activity. It justifies a brief stop and investigation (a Terry stop), not a full arrest, and it must be based on specific facts or observations rather than a mere hunch. Probable cause is a higher standard: a fair probability that a crime has been or is being committed. With that level of certainty, police can arrest or conduct a search (often with a warrant). So the statement is correct because it captures that reasonable suspicion allows a brief stop, while probable cause justifies arrest or a search. The other options misstate the relationship or the actions permitted—for example, a stop does not require a warrant, and you cannot arrest based solely on reasonable suspicion.

The difference hinges on how much proof is required and what it allows police to do. Reasonable suspicion is a lower, articulable belief that a person is involved in criminal activity. It justifies a brief stop and investigation (a Terry stop), not a full arrest, and it must be based on specific facts or observations rather than a mere hunch. Probable cause is a higher standard: a fair probability that a crime has been or is being committed. With that level of certainty, police can arrest or conduct a search (often with a warrant). So the statement is correct because it captures that reasonable suspicion allows a brief stop, while probable cause justifies arrest or a search. The other options misstate the relationship or the actions permitted—for example, a stop does not require a warrant, and you cannot arrest based solely on reasonable suspicion.