The correct answer is C. Social ceremony
Step-by-step explanation:
A potlach refers to a type of ceremony celebrated by different American Native Tribes such as the Haida and the Makah. In this, different tribes or groups gather to give each other wealth or gifts that show the wealth and power of tribes, due to this, potlaches are considered as social ceremonies rather than religious ceremonies and influence the relationship between different tribes in terms of power, politics and even economic. According to this, a potlach can be best described as a Social ceremony.