Why is a stock exchange like NASDAQ considered a secondary market? A. It trades the second largest volume of shares in the world. B. NASDAQ is called a secondary market because NYSE is considered a primary market. C. The exchange has rules that attempt to ensure that bid and ask prices do not get too far apart. D. Shares sold on it are exchanged between investors without any involvement of the issuing corporation.

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.