Answer:
Option a.
Step-by-step explanation:
The longevity of the workers depended on the conditions that they lived and worked in.
Industrial workers, unlike Civil War veterans, worked long-hard hours. Some worked in coal mines and were exposed to dangerous gases. Also, the wages were not equal to the effort put.
Civil War veterans earned the respect of the people because they protected the country's borders. Thus, unlike industrial workers, they were not exploited for their labor. They offered their services voluntarily.