They struggled with, a segregated society in which the majority of the population were second-class citizens.
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Industrialization moved to more impersonal compontents. The worker is seen as replaceable. If a worker got hurt, another worker would step in. Later more machines replaced the workers. Dirty conditions and poor lighting. Extreme hours, 14 -18 hours a day.
D. facilities for medical experimentation
The answer is the first one. The paradox is an announcement that, regardless of obviously solid thinking from genuine premises, prompts a self-opposing or a legitimately inadmissible conclusion. Some conundrums have uncovered blunders in definitions thought to be thorough, and have made adages of arithmetic and rationale be reconsidered.