Which part of economic theory is used to determine income and employment level of the economy ? (a) Microecnomics (b) Macroeconomics
(c) Neither (a)nor(b) (d) Both (a) and (b)​

(b) Macroeconomics

Explanation:

Macro Economics is known as Income Theory. ... It studies about the performance of the economy as a whole and not of any individual firm or business. It focuses on the study of problems like inflation, unemployment, poverty, etc. It aims to determine the national income and employment levels in the country.