What were the three principal characteristics of music after the Second World War?

Tanpura

a. melodic b. drone c. percussive

Which of the following statements is correct?

A. There is clear evidence that unions have increased the average level of real wage rates for all workers. B. When fringe benefits are taken into account, the overall compensation of union and nonunion workers is equal. C. Approximately 10 percent of all work time is lost annually because of strikes. D. There were 19 major work stoppages in the United States in 2011.