A simple macroeconomic model might explain how an increase in the demand for new housing would lead to a decrease in the rate of unemployment. In such a model, which of these variables is likely to be exogenous?

Mark Zuckerberg believes everyone in the world should have Internet access

A) This is a positive statement and is not in the social interest if the marginal benefit of Internet access exceeds the marginal cost. B) This is a positive statement and is not in the social interest if the marginal cost of Internet access exceeds the marginal benefit. C) This is a normative statement and is not in the social interest if the marginal benefit of Internet access exceeds the marginal cost. D) This is a normative statement and is not in the social interest if the marginal cost of Internet access exceeds the marginal benefit.

Increases in ________ typically lead to decreases in private saving

A) the interest rate B) disposable income C) autonomous consumption D) all of the above E) none of the above