Answer:
A. Worked for wages
Explanation:
By 1890s, majority of the Americans worked for wages as majority of the workforce comprised of laborers, most of whom were unskilled.
During this phase as more and more laborers were attaining skills, the skilled wages grew drastically.
Rapid development in the form of economic growth was achieved during late 1800, being one of the reasons for it being cited as the gilded age.
During the same phase, labor unions gained prominence.
