Final answer:
Working conditions in factories at the end of the 19th century were difficult, dangerous, and low paying.
Step-by-step explanation:
The statement that best describes working conditions in factories at the end of the 19th century is option d. Factory work was difficult, dangerous, and low paying. During this time, factory workers faced long hours, unsanitary working conditions, and dangerous machinery without proper safety regulations. Many workers, including women and children, were subjected to low wages and poor treatment by their employers.
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