Concept:The walimah is the wedding banquet given in Islamic marriage.Its main purpose is to announce and publicly celebrate the marriage.Explanation:The word walimah refers to the special feast held after the wedding.This feast is not meant to empower only the bride or support the couple financially.It is held so that the marriage becomes known to family, friends, and the community.Therefore, the walimah is meant to publicize the union of the couple.Answer:C. publicize the union.