Correct option is B
U Thant was appointed as the Secretary-General of the United Nations in 1961. He served from 1961 to 1971, succeeding Dag Hammarskjöld after his tragic death in a plane crash.
Information booster :
U Thant was a diplomat from Burma (Myanmar) and the third Secretary-General of the United Nations. He was the first non-European to hold the post.
His tenure was marked by significant Cold War events, including the Cuban Missile Crisis, the building of the Berlin Wall, and the Congo Crisis.
U Thant’s leadership was instrumental in advocating for peaceful resolutions to conflicts, and he played an important role in overseeing peacekeeping missions during his tenure.
After serving as Secretary-General, U Thant continued to be involved in international diplomacy, focusing on global peace and conflict resolution.
Additional Information:
U Thant helped navigate the United Nations through several crises and was known for his calm and diplomatic approach. He was succeeded by Kurt Waldheim in 1972.