In 1900, 4 percent of the U.S. population was aged 65 or older. That figure was 12.4 percent in 2000, and it is estimated that it will be 20.2 percent in 2050. Which phrase refers to this change? A. The "American Dream" B. The "graying of America" C. The "American melting pot" D. The "manifest destiny of America"
