The correct answer is C. To create residential patterns.
The most important functions of a family is to perpetuate society either socially through the way of socialization or biologically through the procreation.
Some other functions of a family include socialization, consumption, and production of services and goods, effective nurturance and physical maintenance.
There are other functions of a family which are termed as basic. For example, sexual activity, reproduction, emotional security and economic and socialization.