If you need to confirm someone's legal status, what action should you take?

The most appropriate action to take in order to confirm someone's legal status is to request a warrant check. By conducting a warrant check, law enforcement personnel can access various databases that contain pertinent information regarding an individual’s legal standing, including any existing warrants, pending charges, or other legal issues. This method enables an accurate and official determination of the individual's status based on documented legal records.

In the context of other options, calling by telephone lacks the reliability and official capacity needed to verify legal status effectively. While advising someone of your home or canceling a last message is not relevant in the context of confirming legal status, they do not serve the purpose of obtaining concrete legal information necessary for assessing an individual's situation. Therefore, the action of requesting a warrant check stands out as the most effective and authoritative means to confirm someone's legal status.