Answer:
The first one, "to pressure the Allies to withdraw from West Berlin."
Step-by-step explanation:
The Berlin blockade was an attempt made by the Soviet Union to induce the withdraw of the Allied power's jurisdictions they had gained following World War II. Stalin quickly realized how ineffective it was, however, after the United States and Great Britain provided West Berlin with necessary supplies/relief (the Berlin Airlift). It represented the first major conflict of the Cold War and lasted for nearly a year. I hope this helps!