Answer:
Correct answers are:
The United States feared the spread of communism.
The Soviet Union felt threatened by the influence of the United States.
Step-by-step explanation:
Tensions after WW2 were mostly created to ideological differences between two countries, that at the end led to Cold War.
First option is correct as United States believed that communism will spread from Eastern Europe towards Western Europe and even the States. That is why a lot of people were even arrested in the US.
Second option is not correct as two countries were never directly involved in conflict.
Third option is not correct as Germany was under control of both countries after the war.
Fourth option is correct as it had similar consequences as option two. Soviets were afraid of Western influence.
Last option is not correct because as we have said Germany was under control of Allies.