An Oba in the traditional Yoruba political system was

In the traditional Yoruba political system, an Oba was the executive head of his people. This means that the Oba was the political leader and ruler of his kingdom or city-state. He held significant powers and responsibilities, including making decisions on matters of governance, administration, and justice. The Oba also served as the spiritual and cultural leader of his people and was regarded as a symbol of their identity and unity. Therefore, the option that best describes an Oba in the traditional Yoruba political system is "the executive head of his people."