Concept:Nigeria was a member of a pre-OAU regional bloc that favoured a moderate path to African unity.
Explanation:Before the OAU was formed, African states were divided into two main groups.
The Casablanca group wanted immediate continental unity and was more radical.
The Monrovia group preferred a gradual, step-by-step approach to integration.
Nigeria supported this moderate, gradual approach.
Therefore, Nigeria belonged to the Monrovia group, not the Casablanca or Brazzaville groups.
Answer:B. Monrovia group