Microeconomics vs. Macroeconomics

Steps:

• Define microeconomics as the study of individual economic agents like firms and households making decisions on resource allocation.
• Identify decisions affecting single entities as microeconomic, while those impacting the entire economy are macroeconomic.
• Evaluate each choice: A involves national monetary policy; B is a firm's pricing strategy; C affects overall taxation; D sets broad labor standards.
• Select the option where an individual firm acts independently.

Why B is correct:

• Microeconomics examines firm-level decisions, such as pricing to maximize profit, per the definition of individual market behavior.

Why the others are wrong:

• A: Central bank actions are macroeconomic, influencing aggregate economy-wide interest rates.
• C: Government tax changes are macroeconomic, affecting national fiscal policy and total income.
• D: National minimum wage hikes are macroeconomic, impacting overall labor markets and employment levels.

Final answer: B