What is required for every arrest?

Probable cause is essential for every arrest because it establishes a reasonable grounds for believing that a crime has been committed and that the individual in question is involved in that crime. This legal standard protects individuals from arbitrary detention and ensures that law enforcement has sufficient justification to interfere with a person's liberty. Probable cause involves a factual basis, supported by observable facts and circumstances, that would lead a reasonable officer to conclude that a crime has occurred.

The other choices do not fulfill the legal requirements for making an arrest. Intimidation is neither a legal basis nor an acceptable practice in law enforcement. While having evidence of guilt can support a prosecutor's case later on, it is not a prerequisite for making an arrest. Similarly, although some departments may require a sign-off from a supervisor in regarding protocol or policy, it is not a universal requirement and does not constitute the legal foundation for an arrest. Probable cause remains the fundamental standard that guides lawful arrests.