Macroeconomics examines economy-wide aggregates

Steps:

• Recall macroeconomics studies broad economic indicators like national inflation and unemployment.
• Identify option A as linking two aggregate metrics: inflation rate and unemployment rate.
• Contrast with microeconomics, which focuses on individual units like firms, consumers, or specific markets.
• Eliminate options B, C, D as they involve micro-level relationships.

Why A is correct:

• Macroeconomics analyzes aggregate phenomena, such as the Phillips curve relationship between inflation and unemployment rates across the entire economy.

Why the others are wrong:

• B: Microeconomics studies firm-specific output and costs.
• C: Microeconomics examines individual consumer demand curves.
• D: Microeconomics analyzes labor markets for particular occupations.

Final answer: A