Which of the following arguments is supported by the demographics of families in the work force?

The price for housing is still unstable, regardless of the number of people living in a household.
The money spent on clothes is increasing and is becoming a serious problem for families.
The price of farm equipment is decreasing, causing food to become less expensive over the past one hundred years.
The money spent on goods has increased, because family sizes are larger than they were one hundred years ago.