Question

which of the following offices are required to be elected in all units of local government in virginia? clerk of the circuit court treasurer school board sheriff commissioner of revenue manager mayor

Explanation:

In Virginia, the Sheriff is an elected office in all units of local government (counties, cities, etc.). Other options like Clerk of Circuit Court, Treasurer, School Board, Commissioner of Revenue, Manager, and Mayor may have different selection methods (some elected, some appointed, or varying by locality), but Sheriff is a position that is consistently elected across local governments in Virginia.

Answer:

Sheriff (the option labeled "Sheriff" in the list)