The correct answer is D) it proved their relationship because it showed that they could work together successfully to resists the USSR.
The response to the Berlin blockade affected the relationship between the United States and its allies in that it proved their relationship because it showed that they could work together successfully to resists the USSR.
On June 26, 1948, the Allies decided to send water, food, and medicine to West Berlin by air. This was the best tactic to defeat the Soviet Union blockade. The allies sent provisions by air for one year. Nearly two million people survived in West Germany due to this help.
The other options of the question were A) it harmed their relationship because not everyone wanted to oppose the USSR. B) it harmed their relationship because some nations wanted to take all the credit. C) it proved their relationship because it showed that they could earn huge profits by negotiating trade agreements together.