C because when people can't grow crops they need other ways to make money.
I believe the answer is: Family structures are changing, but families remain important to American life.
The main reason of the changing structures is the increase in divorce rate, and non-monogamous relationship. In the past, almost all children only have one father and one mother. In recent years, children could have more than 2 parents or even only one (in case of single parenthood)
Answer:
staffing, development, compensation, safety and health, and employee and labor relations.
