The correct answer is "an area of Soviet-aligned nations following WWII."
This is evident from the map based on the information provided in the key. In the key it states that the purple area symbolizes "Socialist FR of Yugoslavia: USSR aligned until 1948." Considering that World War II ends in 1944, this shows that this area was indeed aligned with the Soviet Union after World War II.
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A would be the answer i believe
A magnitude 9.0 earthquake struck off the east coast of Japan, at 38.3 degrees North latitude and 142.4 degrees East longitude. The epicenter was 130 kilometers (80 miles) east of Sendai, and 373 kilometers (231 miles) northeast of Tokyo.