The Marshall Plan was used to help war-ravaged countries: A. Build an army to fight the Soviets.
B. Rebuild their economies
C. Airlift food to Berlin
D. Dig tunnels under the iron curtain

B. Rebuild their economies.
My source for this
“ an effort to prevent the economic deterioration of postwar Europe, expansion of communism, and stagnation of world trade, the plans that out to stimulate European production, promote adoption of policies leading to stable economies, and take measures to increase trade among European countries in between Europe and the rest of the world.” (www.everycrsreport.com)