A. checking European inroad into Yorubaland
B. restoring the dignity of the Alaafin
C. reducing the powers of Ibadan
D. forming a federated government.

Correct Answer: Option C

C. reducing the powers of Ibadan

Explanation

Ibadan had grown to become the most powerful Yoruba state whose administrative over other Yoruba states
and towns had become oppressive and therefore unpopular.

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