What does macroeconomics primarily study?

Macroeconomics focuses on economy-wide phenomena, analyzing large-scale economic factors and their interactions. It studies aggregate indicators such as inflation, unemployment, economic growth, and national income. By examining these broad aspects, macroeconomics aims to understand how the economy functions as a whole and to inform policies that influence economic stability and growth.

The other options revolve around more specific areas of economics. For instance, individual firm behavior relates to microeconomics, which analyzes how companies operate, make pricing decisions, and interact within markets. Global market trends may be part of a broader analysis but do not specifically denote the comprehensive study of economy-wide factors. Lastly, consumer pricing decisions also fall under microeconomics, focusing on individual preferences and market demand rather than overarching economic issues. Therefore, the choice that accurately represents the primary focus of macroeconomics is the study of economy-wide phenomena such as inflation and unemployment.