Answer:
The Meaning of term Economics, varies ,as different scholars have different views.
The Word Economics came into existence ,due to term economy .
Economy, is the word used for the system, in which goods are produced and interchanged with other goods.
Economics,word has different meaning, when you consider different systems
When you consider earth as a system,it is about using your resources in best possible way,without misusing it.
And,when you use the term Economics for a country, then it's meaning is how government uses it's goods produced as well as the resources it has , in single matchless way for the welfare of it's country People.
As, money came Latter,and resources that earth has is from the beginning when the earth was formed .
So, Option (A): It is the study of using limited resources to fulfill wants and needs.