Help me please which one is it please

Which of the following is an example of one of the successes of the marshall plan? a. a few eastern european countries decided to turn to democracy. b. western european economies were stronger than they had been before wwii. c. borders between western and eastern european countries shifted. d. eastern european countries eventually took part in the plan. ( answer in the format above so i can understand)

Which product would have been most likely to have been traded in this area at this time?

How did german physicist werner heisenberg's uncertainty principle shake beliefs in newtonian physics?