Answer:
D. Economics does not use theories.
Step-by-step explanation:
Economics is the study of : limited resource allocation, having alternative uses - to satisfy unlimited wants.
Economics is both a science (empirical science) & art (social science).
Economics has generally accepted rules & laws, based on experimentation - like Empirical Science. Eg: Law of Demand stating inverse relationship between price & quantity demanded.
Economics has subjective application essence to solve economic issues - like Social Science / art. Eg: Contractionary monetary policy (reducing money supply) to solve inflation (high price level)