Who establishes the review and compensation guidelines for the General Manager?

The Board of Commissioners is responsible for establishing the review and compensation guidelines for the General Manager. This is crucial as the General Manager is often tasked with overseeing the daily operations of the utility and making significant decisions that impact service delivery and strategic direction. The Board of Commissioners provides the necessary oversight and ensures that performance evaluations and compensation align with the utility's goals and standards.

The other entities mentioned, like the City Council, City Administrative Officer, and Mayor, have various functions and roles in city governance but do not directly establish these specific guidelines for the General Manager's review and compensation. The Board has the authority to define and implement the performance metrics and compensation structure that align with organizational objectives, making it the correct answer in this context.