The correct answer is A.
A traditional economy in a system in which the types of goods and services produced, the tecniques used to obtain them and the manner of distributing the wealth generated are defined by customs and beliefs.
These type of economies are economies of subsistence, where most of the production generated is used for self-consumption and there are only very rudimentary trade relationships, taking the form of barter. There are almost no production surpluses, or very small ones.