Which description best defines macroeconomics?

• A. Microeconomics
• B. Macroeconomics
• C. Econometrics
• D. Behavioral economics

Answer: (B)

Macroeconomics is the study of the economy as a whole, focusing on broad aggregates like GDP, inflation, unemployment, and how policy actions affect overall economic performance. This big-picture view is what the description is aiming for, since it looks at economy-wide trends and forces rather than the behavior of individual markets.

In contrast, microeconomics zeroes in on decisions made by individuals and firms in specific markets; econometrics is a set of statistical tools used to estimate economic relationships from data; behavioral economics adds psychology to explain why people sometimes act irrationally. So the description that centers on the entire economy and its aggregate indicators is the best fit.