If a family unit is spending more than its current income, it must be engaged in one of four actions. which of the following is not one of those four actions?
a. receiving public transfers from a government
b. receiving gifts from friends or relatives
c. borrowing
d. increasing its money holdings or buying assets

D-Increasing its money holdings or buying assets

Explanation:

If a family unit is spending more than its income it implies that either the family is borrowing money or selling its asset such that the money holdings of the family is decreasing. Thus Family cannot increase its money holdings or buying assets while they spending more than their incomes.

Thus d is the most appropriate among the given options

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.