How would the marshall plan prevent the spread of communism in europe?

a. the marshall plan provided financial aid on the condition that the united states would act as adviser to the receiving nation's government.

b. the countries that received financial aid through the marshall plan were less likely to join the communist bloc.

c. the marshall plan required receiving nations to severely reduce trade with the soviet union and its satellite states.

d. the receiving nations under the marshall plan were strongly monitored by the united states and other western allies.

i've struggled with it for a while now.