In the month of december, many jewish families celebrate chanukah, the "festival of light," during which special foods are served and families engage in ritual activity unique to their religious faith. in this context, members of the jewish faith would represent a

   Subculture

Explanation:  Subculture is one aspect of culture in general, or rather the cultural characteristics of a community within the wider social collage. Thus, a particular community represents a subculture by its special, different from majority, beliefs, customs, characteristics, behavior, etc. It may not only be a particular group on the basis of their religious preferences and diversity, such as the Jewish community, but also any other group whose diversity is based on criteria other than religious, such as artistic, political, etc.

the answer is d.index