Question

What did the Truman Doctrine and the Marshall Plan have in common?

They were both efforts to win the nuclear-arms race.
They were both opposed by Republicans in Congress.
They were both part of the U.S. effort to rebuild Germany and Japan.
They were both intended to stop the spread of communism in Europe

Answer 1

D. They were both intended to stop the spread of communism in Europe.

Answer 2

"They were both intended to stop the spread of communism in Europe" is the best option, since the Truman Doctrine stated that the US would give aid to any countries be threatened by communism, and the Marshall Plan aimed to give funds to war-torn countries after WWII.