Answer:
a. The unemployment rate in the United States was 9.7 percent in March 2010 - Macroeconomics
b. A U.S. software firm discharged 15 workers last month and transferred the work to India - Microeconomics
c. An unexpected freeze in central Florida reduced the citrus crop and caused the price of oranges to rise - Microeconomics
d. U.S. output, adjusted for inflation, decreased by 2.4 percent in 2009 - Macroeconomics
e. Last week, Wells Fargo Bank lowered its interest rate on business loans by one-half of 1 percentage point - Microeconomics
f. The consumer price index rose by 2.7 percent from December 2008 to December 2009 - Macroeconomics