A) Northern, Western, Eastern, and Southern
B) Northern, Western, Eastern, and Mid-Western
C) Northern, Southern, Western, and Eastern
D) Northern, Western, Eastern, and Central

A) Eastern Region
B) Northern Region
C) Mid-Western Region
D) Western Region

A) Northern Region
B) Eastern Region
C) Eastern Region
D) Mid-Western Region

A) Northern Region
B) Mid-Western Region
C) Western Region
D) Eastern Region

A) Lagos Region
B) Mid-Western Region
C) Northern Region
D) Eastern Region

A) Western Region
B) Eastern Region
C) Northern Region
D) Mid-Western Region

A) Northeast
B) Southeast
C) Southeast (The Eastern Region covered the southeastern part of Nigeria)

A) Eastern Region
B) Western Region
C) Northern Region
D) Mid-Western Region

A) Edo
B) Igbo
C) Yoruba
D) Hausa-Fulani

A) Northern Region
B) Eastern Region
C) Mid-Western Region
D) Western Region