Answer:
c. spurred growth in other industries such as tourism and steel production.
Explanation:
The Automotive Industry contributed a lot to the other industries in America. During the 1920s the first sign of prosperity of America was the growth of the automobile industry. Henry Ford changed the industry in the world forever since he created a new form of building cars called assembly line that was used in all automotive and other industries.
Also, the growth of demand for cars also pushed other industries that were linked to the automotive industry, such as steel, leather, rubber, glass, tin, lead, aluminum and nickel. This industry also pushed for a bigger production of petroleum and the creation of better and new roads for people to travel and meet new places.