A bank lends money to a big business but turns down a small business Is this micro or macroeconomics?

This scenario primarily falls under microeconomics, as it involves the decision-making processes of individual businesses and the bank's lending policies. Microeconomics focuses on the behavior of firms and consumers in specific markets, analyzing how their interactions affect supply, demand, and pricing. In contrast, macroeconomics examines broader economic factors such as national income, inflation, and unemployment, which are not directly relevant to this specific lending decision.