Weegy: What is your question please? User: here have been approximately thirty-three major contractions and expansions of the U.S. economy since 1854, each lasting from several months to several years. • During the Great Depression, economist John Maynard Keynes suggested that government monetary policies could be used to lessen the effects of contractions. • The later work of macroeconomist Milton Friedman established that it is important to control expansions in addition to moderating contractions. Previous economists such as John Maynard Keynes and Milton Friedman believed it was important to monitor and control economic fluctuations. Which statement about modern macroeconomists is true? A. Modern macroeconomists believe that the business cycle model is no longer valid for today's complex economy. B. Modern macroeconomists continue to study the business cycle in an attempt to prevent recessions and make the economy more stable. C. Modern macroeconomists have mastered the complexities of the business cycle and can now prevent recessions in the national economy. D. Modern macroeconomists agree that the business cycle is impossible to regulate and are seeking better methods of preventing recessions. Weegy: What is your question please? User: Which statement about modern macroeconomists is true? A. Modern macroeconomists believe that the business cycle model is no longer valid for today's complex economy. B. Modern macroeconomists continue to study the business cycle in an attempt to prevent recessions and make the economy more stable. C. Modern macroeconomists have mastered the complexities of the business cycle and can now prevent recessions in the national economy. D. Modern macroeconomists agree that the business cycle is impossible to regulate and are seeking better methods of preventing recessions. (More)