The developments described in the excerpt most directly reflect which of the
following changes in the 1920s? "The Model T was the car of the century,
transforming motoring for millions. Its cheapness and flexibility meant that the
car became less of a symbol of wealth and leisure than an affordable adjunct to
the everyday life of even the humblest worker. And the key to its cheapness was
its revolutionary production method."-Source: Steven Parissien, historian. The
Life of the Automobile: The Complete History of the Motor Car, 2013 *
A. the development of highways
B. the spread of regional cultures
C. the rise in consumerism
D. the promotion of free trade