What standard is lower than probable cause and justifies brief detention or stops?

• A. Reasonable Suspicion
• B. Probable Cause
• C. Preponderance
• D. Beyond a reasonable doubt

Answer: (A)

Reasonable suspicion is the threshold that allows police to briefly detain a person to investigate possible criminal activity. It sits below probable cause, meaning it doesn’t require enough evidence to arrest, but it must be more than a hunch. The judge or the officer must be able to point to specific, articulable facts or to reasonable inferences drawn from those facts. Everything is weighed together—the totality of the circumstances—to determine if the stop is justified.

This standard is what authorizes a Terry stop: a short detention to question the person, check for weapons if safety concerns exist, or pursue further investigation. For example, if someone is seen acting nervously in a high-crime area, matching a description from a recent incident, and attempting to avoid questioning, those facts might collectively justify a brief stop.

The other options represent different levels of certainty. Probable cause is the level needed to arrest or obtain warrants. A preponderance is the civil standard used in most civil cases, not criminal investigations. Beyond a reasonable doubt is the high standard required for convictions. Reasonable suspicion is specifically the lower, investigatory standard that justifies brief detentions or stops.