Concept:NEPAD stands for the New Partnership for Africa's Development.
It is an African Union, socio-economic framework aimed at promoting development and integration in Africa.
Explanation:Olusegun Obasanjo was the President of Nigeria from 1999 to 2007.
He was one of the foremost African leaders who advocated for the creation of NEPAD.
NEPAD was officially launched in 2001.
Obasanjo strongly supported the programme as a way to accelerate economic cooperation among African states.
He worked with other African leaders, including Thabo Mbeki of South Africa, to push the initiative forward.
Among the Nigerian leaders listed, it was Obasanjo who played a key role in championing NEPAD.
The other options, Yakubu Gowon, Muhammadu Buhari, and Shehu Shagari, were not central to NEPAD’s founding advocacy.
Answer:A. Olusegun Obasanjo