which statement best summarizes the relationship between Investments and productivity A companies use Investments to reduce the opportunity cost of low productivity B companies with high levels of productivity never need to worry about investment C companies use Investments to reduce their need for high levels of productivity D companies with poor productivity use Investments to become more efficient

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.

The correct answer is "a.grassroots movements".