What impact did Henry Ford have on the automobile industry? O By 1929, about 40% of Americans owned cars.
Ford introduced the assembly line for mass production of cars.
He used interchangeable parts to produce more cars.
He drove Chrysler out of business.

Ford introduced the assembly line for mass production of cars.

Explanation:

The assembly line in Henry Ford automobile industry supported him in mass production. The assembly lines allow workers and machines to complete particular tasks as assigned. Lines helped finish work in less time with fewer efforts by creating various work stations in one line. In the beginning, the Model T car was not mass production as it were expensive. To improve the production of cars, Ford introduced the assembly line, which helped to finish the product in short period.

answer: because they get bored or smth idk

there is no chart here so no one can answer this.