[ 537 ] U.S. History GED ® TEST SOCIAL STUDIES FLASH REVIEW _____________ • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Use the graph to answer the following two questions. Americans by Age Group, 1900 to 2000 Infant to 24 25 to 54 Over 65 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000 Percent (%) 60.0 50.0 40.0 30.0 20.0 10.0 0.0 Which of the following conclusions is supported by the data in the graph? a. Americans are less healthy in 2000 than they were in 1900. b. The age of the average American has increased since 1900. c. The average American earns more in 2000 than he or she did in 1900. d. The number of Americans under the age of 24 has decreased since 1900.