What do you lean about this basic microeconomics?

Microeconomics is a branch of economics that studies the behavior of individuals and businesses and how decisions are made based on the allocation of limited resources. Simply put, it is the study of how we make decisions because we know we don't have all the money and time in the world to purchase and do everything.

Explanation:

Microeconomics is the study of human action and interaction.Ultimately, microeconomics is about human choices and incentives. Most people are introduced to microeconomics through the study of scarce resources, money prices, and the supply and demand of goods and services.

hope this helped :)

the answer is option a.