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.
Answer:a
Explanation:
The Present value of cash Flow increases as the discount rate decreases as there is an inverse relation with discount rate.
Mathematically,

Where
PV=Present value
CF=cash Flow
r=discount rate
t=time
as r decreases PV increases