Probable cause is the level of proof required to do what?

• A. Beyond a reasonable doubt
• B. Make an arrest
• C. Preponderance of evidence
• D. Reasonable suspicion

Answer: (B)

Probable cause is the level of proof needed to lawfully arrest someone. It means the facts and circumstances known to you would lead a reasonable officer to believe that a crime has been committed and that the person you’re about to arrest is involved. This standard sits between a mere suspicion and the level of certainty required to convict in court. It also underpins the authority to obtain warrants for searches. For detentions short of an arrest, the standard is reasonable suspicion; for criminal conviction, the standard is beyond a reasonable doubt; civil cases use a preponderance of the evidence. Therefore, the action that requires probable cause most directly is making an arrest.