What surprises Olney about the behavior of the US government ?

In a landmark extension of the Monroe Doctrine, Olney declared that the United States regarded any dispute between a European colony in the western hemisphere and any sovereign Latin American state as a matter of American national interest. The United States insisted that Britain submit the matter to arbitration.

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )