The automobile was introduced and popularized in the twentieth century. today, most american families have at least one automobile. what developed as a result of this major invention? a) grocery stores were built because people now had a way to leave their farms and go shop for things they needed. b) more public schools were built because parents now had transportation, allowing them to drop off and pick up their children. c) fire stations were developed as the amount of fires greatly increased due to gasoline used by cars. d) since people could live farther from the cities where they worked, suburbs formed as more people moved out of the city.