In which instance could a peace officer legally search a person?

A peace officer can legally search a person in a variety of circumstances, which is why the choice indicating all of the above is correct.

During a traffic stop, if an officer observes suspicious behavior or has a reasonable belief that there may be a weapon or illegal substance involved, they are often permitted to conduct a search of the vehicle and its occupants for officer safety and to enforce the law.

Reasonable suspicion allows officers to engage in a brief investigatory stop and possibly conduct a search if they believe criminal activity is afoot. This standard is less than probable cause but still warrants a closer look at the person or their belongings.

Consent is another vital aspect of lawful searches. If a person voluntarily consents to a search, an officer can proceed without needing probable cause, reasonable suspicion, or a warrant. This highlights the importance of consent in search situations, as individuals can give permission for officers to conduct searches even when other justifications may not be present.

Given these three scenarios, it becomes clear that a peace officer has the legal authority to search a person under varied conditions, substantiating why the answer encompasses all listed situations.