A Graph of the Unemployment Rate of the United States

Multiple Choice

A graph of the unemployment rate of the United States over the twentieth century shows

A) an overall upward trend in the unemployment rate interrupted by a large upturn in the 1930s.
B) an overall downward trend in the unemployment rate interrupted by a large upturn in the 1930s.
C) rates of unemployment always greater than zero with substantial variations from year to year.
D) alternating periods of positive and negative rates of unemployment.