Final answer:
In a macroeconomics course, the subject that would be studied in the greatest detail is national income and employment trends. Macroeconomics explores broad economic issues affecting the entire economy, unlike microeconomics which looks into individual or firm-level decisions.
Step-by-step explanation:
In a macroeconomics course, c) National income and employment trends would be studied in the greatest detail. Macroeconomics focuses on the behavior, performance, and decision-making of an economy as a whole, rather than individual markets or actors, like the study of microeconomics.
Macroeconomics covers broad issues such as national income, gross domestic product (GDP), inflation, unemployment, and monetary and fiscal policy. By contrast, microeconomics focuses on the supply and demand in individual markets, consumer behavior, and price determination. Topics such as individual consumer behavior, price determination in a specific market, and microeconomic supply and demand are more closely aligned with microeconomics, which deals with narrower issues at the individual or firm level.
Therefore, if you're studying macroeconomics, you'll mainly be examining how an entire economy functions, identifying patterns and factors that influence the economy widely. An economist would dive into subjects like economic growth, cycles, government interventions, and the interrelations among different sectors of the economy.