Concept:The Sokoto Caliphate had a centralized administrative hierarchy with the Sultan at the top and the Waziri as his principal official.
Explanation:The Waziri served as the chief minister and closest adviser to the Sultan.
He acted as the head of the administration, much like a modern Prime Minister.
The Waziri was the most powerful officeholder after the Sultan and often deputized for him.
Therefore, he was the next in command to the Sultan.
The Alkali was a judge, the Galadima was a provincial head, and the Madaki was a military commander.
Answer:D. Waziri