The correct answer is a. the creation of Israel.
Since the end of 1944, Joseph Stalin adopted a pro-Zionist foreign policy believing that the new Jewish state would be socialist and, therefore, it would diminish the British influence in the Middle East. For that reason, in November 1947 the Soviet Union and the Soviet bloc voted in favor of the UN plan for the partition of Palestine, and it was the second country to recognize the state of Israel only after the United States.