In a supervisor system, a board of supervisors is responsible for

governing the county, overseeing departments, and creating policies.
governing the county, with little power to create policies.
governing the county with a council and an executive.
governing the county, creating policies, and supervising a council.

In a supervisor system, a board of supervisors is responsible for governing the county, overseeing departments, and creating policies.

In a supervisor system, a board of supervisors is responsible for governing the county, overseeing departments, and creating policies.