The use of women, children and immigrant allowed industrialists and factory owners to keep wages low for native born men. This was an important catalyst for the organization of labor unions, Children often worked long hours for low pay. The same was true of women and immigrants.
The correct answer would be alternative C)"It maximizes the political freedoms guaranteed to individual state governments."
A Confederal System of Government indeed maximizes the freedoms of its citizens, by giving more power and authority to state and local institutions.
A Unitary government benefits those around the authoritarian leaders, and least influential regions have a greater chance of being under supported.
The correct answer is High-tech sector employees were less likely to lose their jobs
Whereas many businesses stalled and had to fire people, these were mostly people that were easily replaced for someone who could work for a smaller salary. High tech sector employees are usually too much of a benefit to the company to be laid off so their job security was high since nobody could replace them.