Its C. Remember that this is a post-WW2 act when the USA was seeking to end the spread of communism to any further countries. The USA thought that if they gave the destroyed countries money to rebuild they would less likely to fall to communism because they would be stable.
The answer is letter C. The Marshall Plan was also known as
the European Recovery Plan, a plan made by the United States in order to aid
Europe after World War II, this plan was made
in order to stop Communism from spreading all over Europe.