Kelly and David are both capable of repairing cars and cooking meals. Which of the following scenarios is not possible? a. Kelly has a comparative advantage in repairing cars and David has a comparative advantage in cooking meals. b. Kelly has an absolute advantage in repairing cars and David has an absolute advantage in cooking meals. c. Kelly has a comparative advantage in repairing cars and in cooking meals. d. David has an absolute advantage in repairing cars and in cooking meals.

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.