Answer:
Option: Production.
Step-by-step explanation:
At the beginning of the production of Henry Ford's Model T car, it was not in mass production and the cars were expensive. Selling at the price of $850, was slightly higher than the income of the average American worker. So, he decided to lower the prices of the cars for the Americans who were not able to buy. To improve the production of the cars, he introduced an improved assembly line in the manufacturing process. The assembly lines helped in producing the finished product in a short period.