Refer to the diagram, in which solid arrows reflect real flows; broken arrows are monetary flows. Flow (6) might represent:

Answer:

A.  the purchase of armored personnel vehicles by government.
B.  corporate income tax payments.
C.  the purchase of basketballs by the Ogallala school district.
D.   the payment of payroll taxes by households.

answer: D.   the payment of payroll taxes by households.