The correct answer is D. All of the above.
Business economics is a special branch of economics applied in business decision-making. It is applied economics because it uses economic theories and concepts to solve real-world business problems. It is not theoretical economics because it does not focus on developing new economic theories, but rather on applying existing economic theories to business problems.
Business economics is based on microeconomics, which is the study of the behavior of individual economic units, such as firms and consumers. Microeconomics provides the foundation for business economics by providing a framework for understanding how firms and consumers make decisions.
Statement 1 is correct because business economics is a special branch of economics applied in business decision-making. Statement 2 is correct because the nature of business economics is applied not theoretical. Statement 3 is correct because the nature of business economics is based on micro economics. Therefore, all of the statements are correct.