The Model T stimulated an overall feeling of prosperity. Option B is correct.
The Ford Model T was a low-cost car produced by the Ford Motor Company of Henry Ford from 1908 to 1927. It is generally regarded as the first affordable automobile, the car that opened travel to the common middle-class American.
The Roaring Twenties was the decade of the 1920s in Western society and Western culture. It constituted a period of economic prosperity with a distinctive cultural edge in the United States and Western Europe, particularly in major cities including Berlin, Chicago, London, Los Angeles, New York City, Paris, and Sydney.