Which standard is required to justify arrests and searches?

• A. Probable cause
• B. Reasonable suspicion
• C. Preponderance of the evidence
• D. Clear and convincing evidence

Answer: (A)

Probable cause is the standard required to justify arrests and searches. It means there is a reasonable basis to believe a person has committed a crime or that evidence of a crime will be found in a particular place, based on the totality of the circumstances known to the officer at the time. It’s more than a mere hunch but not an absolute certainty, and it’s the threshold used to obtain warrants or to conduct most warrantless arrests. Reasonable suspicion is a lower standard used for brief detentions or investigatory stops, not for full arrests or searches. Preponderance of the evidence and clear and convincing evidence are civil or higher-criminal standards, not the default standard for arrest or search decisions.