Final answer:
In the given sentence, 'elevated' serves as a verb that indicates Joseph's rise to higher administrative responsibilities during his time in prison.
Step-by-step explanation:
The question 'Even in prison, Joseph was elevated to administrative responsibilities?' is asking which part of speech the word 'elevated' is. In this sentence, 'elevated' is used as a verb. It shows the action of Joseph being raised to a higher position or level, even while being in prison.