Final answer:
A civic disposition is demonstrated through actions such as serving on a jury, accepting election outcomes, and volunteering for the armed forces or as a first responder.
Step-by-step explanation:
A civic disposition is demonstrated when a person upholds the principles and responsibilities of citizenship. In the provided excerpt from the Fourteenth Amendment, supporting a civic disposition involves actions such as serving as an impartial jury member, accepting the outcome of an election as legitimate even if one's candidate does not win, and volunteering to serve in the armed forces or other security-related fields at the national level or as a first responder at the local community level.
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