The correct answer is A) A desire to escape dirty, decaying cities.
The statement that represents a reason for the movement of millions of Americans to the suburbs in the 1950s was "A desire to escape dirty, decaying cities."
In the 1950s, many Americans of the middle class and upper levels had the economy to buy a better home in the suburbs. A common US family of the time could afford a house, a car, and a couple of kids. The US government invested in the construction of a highway system across the country and the automobile industry flourished. People moved to the suburbs to have a better family environment, away from the dirty, decaying cities.