Concept:The Yoruba traditional political system centred on a king or monarch, known as the Oba.
Explanation:In the Yoruba system of government, authority was vested in an Oba, who served as the political and spiritual head.
The Oba ruled with the support of chiefs and councils, but the presence of a hereditary king makes the system monarchical.
Traditional Yoruba society was not egalitarian or purely democratic, even though checks existed through councils.
A republican system also does not apply because leadership was not based on elected representatives alone.
Therefore, the most accurate description is a monarchical system of government.
Answer:A. monarchical