Concept:Tijaniyyah is a Sufi order founded in North Africa, but its firm establishment in West Africa was achieved through the efforts of Al-Hajj Umar Tal.
Explanation:Shaykh Ahmad al-Tijani founded the Tijaniyyah order in Morocco.
It later spread into West Africa through influential Islamic scholars and reformers.
Al-Hajj Umar Tal played the most prominent role in consolidating its influence.
He mobilized followers and built a strong Tijaniyyah tradition across the western Sudan region.
Shaykh Mukhtar al-Kunti is particularly associated with the Qadiriyyah order, not Tijaniyyah.
Therefore, among the given options, Al-Hajj Umar Tal is credited with the consolidation of Tijaniyyah influence in West Africa.
Answer:D. Al-Hajj Umar Tal