Explanation:

- Legitimate Order: Not a common term. Orders come from legitimate authority, but the term itself doesn't convey an accepted concept in political or sociological theory.

- Legitimate Authority: Refers to power or rule that is widely accepted and recognized within a society. It means the right to govern or command is seen as valid by those subject to it.

- Legitimate Power: Related to having a recognized and justified ability to influence or control others. Often linked with authority.

- Legitimacy: The general perception that a rule, institution, or leader is appropriate and justified. It is a key element in establishing trust in governance and compliance.