Which best describes what happens to the amount of a good or service that is supplied to consumers? a.) the amount of a good or service can changeb.) the amount of a good or service always remains the samec.) the amount of a good cannot change d.) the amount of a service cannot change

"a.) The amount of a good or service can change" This is true because a good and service can change for example a good can change if the products used to make it are in low supply. The same goes for services if people do not like their service they are doing they stop doing it, therefore the service changed because there are fewer people doing it. 

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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.