Concept:Decolonisation is the process of granting African territories the right to govern themselves and achieve self-determination.
Explanation:Among the listed administrations, the Murtala/Obasanjo regime was the most committed to African liberation.
It adopted a strong anti-colonial foreign policy and openly supported liberation movements across Africa.
The regime gave diplomatic, financial, and moral backing to freedom fighters in southern Africa.
It also declared Africa the centrepiece of Nigeria's foreign policy.
This meant Nigeria would actively oppose minority rule and colonial domination.
Because of this stance, it became the administration most closely associated with decolonisation and self-determination for African states.
The other regimes mentioned did not pursue this aggressive pro-decolonisation agenda as clearly.
Answer:B. Murtala/Obasanjo regime.