By "Specialization" Economists Mean a Situation Where

By "specialization" economists mean a situation where

A) individuals produce the goods or services for which they have relatively the best ability.
B) goods are traded directly for goods and money is not used.
C) individuals who produce goods do not also produce services and individuals who produce services do not also produce goods.
D) individuals are assigned to occupations on the basis of tests that gauge their relative abilities.