Final answer:
The Sika dwa ko, or Golden Stool, holds great significance in Ashanti culture as it embodies the spirit of the nation, is used during celebrations, and acts as a warning system for the king. It is a symbol of power in Ashanti society.
Step-by-step explanation:
The function of the Sika dwa ko, also known as the Golden Stool, in Ashanti culture is all of the above. It is believed to hold the spirit of the entire Ashanti nation, making it a sacred object used during celebrations and processions. Additionally, the bells on the stool serve as a warning system, alerting the king of any danger. The Golden Stool is the ultimate symbol of power in Ashanti society and plays a central role in their cultural and political life.