Answer :
The source of power that best describes what influence Amir is known as Revert power.
Revert power refers to a power possessed by someone because of the influence he had over others due to being liked, respected etc
- Mark had the Revert power because he had influence over Amir due to been liked and respected by him.
In conclusion, the source of power that best describes what influence Amir is known as Revert power.
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