The excerpt above expresses how the role of public education in the United States has drastically changed over the course of 100 years. During the middle of the 1800's, school was seen as a privilege to attend, not a guarantee. However, this idea changed significantly over the course of the next 100 years. By the time of the middle of the 1900's came around, attending school was seen as a normal thing to do.
This is why D is indeed correct.
No. They believe in communism, entrepreneurs had private businesses, which disagrees with the idea of communism which was to share company with state
Both skilled and non-skilled workers composed the majority of the population who lived in poverty during the Victorian Era in England. This was because the increase in urbanization was at its peak where a lot of workers are required to render their services, as a result of this demand, they were paid little and were exposed to unsanitary working conditions.
A primary example of a primary source, ironic wording there.
Would be first hand accounts, documents, journals, text, anything from the era or timeframe where the subject is from.
Ex: Revolutionary War
Primary Source: George Washington's speeches