Answer:
The correct answer is A. The Berlin Airlift was the effort to supply Berlin through the Soviet blockade.
Step-by-step explanation:
The blockade of Berlin was one of the first major international crises of the Cold War, and the first such crisis that led to casualties. During the international occupation of post-Nazi Germany, the Soviet Union blocked the Western Allies' rail and automobile access to the sectors of Berlin they controlled. The goal was to force Western powers to allow the Soviet zone to start supplying the city with food and fuel, which would give the Soviets practical control over the entire city.
In response, the Western Allies organized the Berlin Airlift to supply food to the citizens of Berlin. The United States Air Force, the Royal Air Force, and the air forces of other Commonwealth member states conducted over 200,000 flights delivering 13,000 tons of food per day, in an operation that lasted nearly a year. By the spring of 1949, it was clear that the operation was a success, and by April, a larger amount of food had been delivered by air than had previously arrived in the city by rail.
The success of the airlift was a humiliation for the Soviets, who insisted that it would never function. When it became clear that the air lift was efficient, a blockade was lifted in May. One legacy of the air lift are three airports in the former western zones of the city.