Answer:
it is, "They borrowed money from their citizens using bonds, then hired an army."
Explanation:
the test tells you the feedback of, "During the Renaissance, larger cities became home to the majority of Europeans. When the cities needed to fight off invaders, they required their citizens to loan money for the raising of an army. Once the war was over, if the city remained strong, its government repaid its citizens, with interest. This is how municipal bonds were first used."
