Which is the best description of the effect that the "baby boom" had on the american economy?

a) between 1954 and and 1965, four out of every ten americans was under the age of twenty.

b) the american economy of the 1950's was marked by widespread unemployment, decreased demand for housing, and recession.

c) the rate of live births in the united states surged from 24 million in the 1930's to 32 million by the end of the 1940's.

d) the baby boom led to increased consumerism, growth in the housing market, and the growth of the middle class.