Final answer:
The most common form of municipal government used by most medium-sized Texas cities is the council-manager system.
Step-by-step explanation:
The most common form of municipal government used by most medium-sized Texas cities is the council-manager system. In this system, citizens elect city councilors who pass laws and handle legislative issues. The first job of the city council is to hire a city manager, who is responsible for the daily operation and management of the city. This form of government is designed to separate the daily operations of the city from the electoral process.
An example of a medium-sized Texas city that uses the council-manager system is Austin. The city council of Austin is composed of 10 members elected by voters, and their first task is to hire a city manager to oversee the city's operations.