A. Trygve Lie
B. U Thant
C. Dag Hammarskjold
D. None of these
🧠 Explanation:
Trygve Lie was the first UN Secretary-General (1946–1952). Studying this highlights international organizations, a key topic in geopolitics. It underscores the UN’s early leadership, with implications for understanding global diplomacy and the establishment of international governance post-World War II.
