Which of the following topics are related to macroeconomics" and which are related to "microeconomics".
(a) a family's decision about how much income to save
(b) the effect of government regulations on auto emissions
(c) the impact of higher national saving on economic growth
(d) a firm's decision about how many workers to hire
(e) the relationship between the inflation rate and changes in the quantity of money

Macroeconomics: B;C;E

Microeconomics: A;D

Explanation:

Macroeconomics deals with the performance, structure, and behavior of the entire economy. It is a branch of economics that studies how an overall economy behaves. Macroeconomics looks at the overall, big-picture scenario of the economy, it focuses on the way the economy performs as a whole and then analyzes how different sectors of the economy relate to one another to understand how the aggregate functions.

Accordingly, to this definition, the topics relating to macroeconomics are:

(B) the effect of government regulations on auto emissions.

(C) the impact of higher national savings on economic growth.

(E) the relationship between the inflation rate and changes in the quantity of money.

Microeconomics is the social science that studies the implications of human action, specifically about how those decisions affect the utilization and distribution of scarce resources. Individual actors are often grouped into microeconomic subgroups, such as buyers, sellers, and business owners. These groups create the supply and demand for resources, using money and interest rates as a pricing mechanism for coordination.

Accordingly, to this definition, the topics relating to microeconomics are:

(A) a family's decision about how much income to save.

(D) a firm's decision about how many workers to hire.