01 If all firms reduce investment because of cost concerns, what effect will macroeconomics focus on?
Answer and explanation
Correct answer: A. The effect on capital formation, aggregate demand, and future output.
Explanation: Investment has both a short-run and a long-run role. Lower investment immediately reduces a component of aggregate demand and may reduce income through the multiplier. Over time it also slows capital formation, lowers productive capacity, and limits future output and employment. Macroeconomics studies these economy-wide effects.