Which Statement Best Describes What Adam Smith Believed Would Happen

Multiple Choice

Which statement best describes what Adam Smith believed would happen when people pursue their own self-interests?  

A)  There would be a tendency to promote the general welfare. 
B)  The government's "invisible hand" would be required to keep the economy running smoothly. 
C)  Aggregate demand may be caused to be greater than aggregate supply. 
D)  The wealth of a nation would increase, in terms of the quantity of gold and silver it owned.