Chief Samuel Adebo served as Nigeria's third Permanent Representative to the United Nations from 1962 to 1967. He played a significant role in shaping Nigeria's early diplomatic engagements on the global stage. This is the best answer since he is the first among the options provided. 

Professor Ibrahim Gambari served as Nigeria's Permanent Representative to the United Nations from 1990 to 1999. He has also held various high-profile roles, including Minister of External Affairs and Chief of Staff to the President of Nigeria.

Alhaji Yusuf Maitama Sule: Known as the "Golden Voice from the North," Maitama Sule was a prominent Nigerian politician, diplomat and orator. He served as Nigeria's Permanent Representative to the United Nations from 1979 to 1983 and was a strong advocate against apartheid.

General Joseph Garba served as Nigeria's Permanent Representative to the United Nations from 1984 to 1990. He was also the President of the United Nations General Assembly from 1989 to 1990.