Определите слово

Определение: “A ______________ is someone that you appoint to act on your behalf to present your appeal before the Review Tribunal. A ______________ can be a family member, a friend, a member of your community, advocate, union ______________, or a professional such as a lawyer, or doctor.”

Первая буква: R

Ответ:  

Какому слову соответствует это определение?

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