Final answer:
Henry Ford revolutionized the auto industry and the manufacturing process by perfecting the assembly line, which allowed for quicker, more cost-effective mass production of automobiles, particularly exemplified by the Model T.
Step-by-step explanation:
The technological innovation by Henry Ford that allowed him to mass produce automobiles quickly and inexpensively was the assembly line. Option C is correct . This system transformed the manufacturing process of the automobile by moving the chassis of the car down the production line while workers remained stationary, each performing a simple and repetitive task. The introduction of the assembly line greatly increased production efficiency and reduced labor costs, which in turn decreased the price of automobiles, making them accessible to a growing number of Americans.
Ford's success was built upon earlier experiments with the assembly line by Ransom E. Olds, but after the Olds factory burned down, Ford took the concept to a new level with his own innovations. His factory with heavy steel rails and conveyor belts enabled even unskilled workers to partake in the production process, contributing to the unprecedented output of Ford automobiles, typified by the popular Model T. Ford's adaptation of the assembly line not only revolutionized the auto industry but set new standards for industrial manufacturing as well.