If You Were Building a Macroeconomic Model That Explores the Effect

Multiple Choice

If you were building a macroeconomic model that explores the effect of an increase in income tax rates on the size of the labour force,the exogenous variable(s) would be

A) income tax rates.
B) the size of the labour force.
C) both income tax rates and the size of the labour force.
D) neither income tax rates nor the size of the labour force.