[Solved] Which vertebrate has a social structure most closely resembling social insects? A) The phalarope B) Lions C) The naked mole rats D) Siberian tigers E) Chimpanzees Multiplier: In macroeconomics, a factor that quantifies the effect of increased investment or spending in an economy, typically leading to a proportionally greater increase in income or output. Multiplier: In economics, the multiplier effect refers to the proportional amount of increase, or decrease, in final income that results from an injection, or withdrawal, of spending. Business Cycle: The fluctuations in economic activity that an economy experiences over a period of time, marked by phases of expansion and contraction. Government Spending: Expenditures by government agencies on goods and services that are intended to improve the nation's economy and the welfare of its citizens.