Final answer:
The correct answer is c. Mayor-Council Plan. This form of municipal government involves voters electing a city council for legislative functions and a mayor for executive functions, distinct from county government structures.
Step-by-step explanation:
The form of municipal government that best completes the title of the chart is c. Mayor-Council Plan. This government structure consists of an elected city council performing legislative functions and an elected mayor performing executive functions. The mayor-council system is distinct from the forms of county government, which include the commission system, the council-administrator system, and the council-elected executive system.
Under the mayor-council system, the separation of powers allows the mayor to focus on executive duties, providing a clear distinction between the policymaking actions of the city council and the administrative functions of the mayor. This system can vary, with the mayor possessing either strong or limited powers, but the hallmark feature is the electoral process where both the mayor and city council members are directly elected by voters.