Answer:
Among the options given below the option A is the best choice.
So the answer is George Washington.
Explanation: After the tragic loss of the 1st world war and the critical condition created by Great Depression America decided to practice isolationism. This strategy was to not getting involved in any European or Asian conflict. During this period USA concentrated on the economic expansion towards Latin America. Among the advocates of the isolationism President George Washington was one of them. On his farewell speech he gave clarity and logic for Supporting isolationism and encouraged USA to continue the system.