What is the terminology that is used to describe the reasonable grounds to believe the existence of facts warranting certain actions, such as the search or arrest of a person?

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Probable cause is the terminology used to describe the reasonable grounds to believe the existence of facts warranting certain actions, such as the search or arrest of a person. Reasonable suspicion is a lower standard than probable cause, and exigent circumstances refer to emergency situations where immediate action is necessary. Reasonableness is a general legal principle that requires actions to be justified under the circumstances.

What Is the Terminology That Is Used to Describe the Reasonable