It's sociology.
Sociology is the study of social problems.
Construct or arrange according to a plan give a pattern or organization
The answer to the given question above would be option A. The type of currency that is now in use in the United States is called FLAT MONEY. This kind of money has a value that is based on the relationship between supply and demand rather than the value of the material that the money<span> is made of. Hope this helps.</span>
The answers Operant behaviors
