c. a group of tribal elders dressed as the ancestors’ spirits
In Igbo society, the judicial process is overseen by the egwugwu, who are a group of tribal elders dressed as the ancestors’ spirits. In ancient culture, like the egwugwu, it is common practice that the elders are in charge of the judicial process because they have major experiences, furthermore, it is believed that dressing as the ancestors' spirit would have a good impact on the decision taken.