Concept:Obasanjo continued the political transition agenda after Murtala Mohammed's assassination.
Explanation:When Murtala Mohammed was killed in 1976, General Olusegun Obasanjo succeeded him as Head of State.
He did not abandon the military government's existing programme of returning Nigeria to democracy.
Obasanjo's administration completed the constitution-making process and conducted local and national elections.
This culminated in the peaceful handover of power to the civilian government of Shehu Shagari in 1979.
Therefore, his major policy direction was ensuring a smooth transition from military to civilian rule.
Answer:A. Preparing the country for a transition to civilian rule and democratic elections.