Macroeconomic Indicators Measure Economy-Wide Activity

Steps:

• Define macroeconomics as the study of the entire economy, including national output, employment, and inflation.
• Identify macroeconomic indicators as broad metrics like GDP, unemployment rates, or inflation that reflect overall economic health.
• Evaluate options: Check if each measures aggregate national performance or is limited to specific sectors, firms, or regions.
• Select the option that best fits the broad, national scope of macroeconomics.

Why C is correct:

• Real GDP is the total value of all goods and services produced in an economy, adjusted for inflation, serving as a primary measure of economic output per the national income accounting framework.

Why the others are wrong:

• A: Agricultural prices focus on a single sector, making it a microeconomic or sectoral indicator.
• B: Average earnings in the secondary sector track wages in one industry, not the whole economy.
• D: Total costs of German pharmaceutical firms are company-specific, a microeconomic detail.

Final answer: C