Which of the following questions is most closely related to microeconomics, as opposed to macroeconomics? a. why has the national unemployment rate risen this year?
b. why has the inflation rate risen in our nation this year?
c. what wage should a firm pay its new accountant?
d. how much output did the US economy produce last year?

When cell phones were first entering the market, they were relatively large and reception was undependable. all cell phones were essentially the same. but as the technology developed, many competitors entered, introducing features unique to their phones. today, cell phones are only a small fraction of the size and weight of their predecessors. consumers can buy cell phones with color screens, cameras, internet access, daily planners, or voice activation (and any combination of these features). the history of the cell phone demonstrates what marketing trend?