Concept:The jihad of Uthman Dan Fodio was a religious movement for purifying and reforming Islamic practice.Explanation:Uthman Dan Fodio aimed to remove un-Islamic practices and introduce proper Islamic reforms in Hausaland.He opposed the Habe rulers because they mixed Islam with traditional customs, but defeating them was a means, not the main aim.Protecting Fulani interests and liberating Muslim captives were not the central objectives of the jihad.Answer:A. Introduction of Islamic reforms.