<span>The right answer is C. northern your welcome</span>
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Answer:I think this is the answer
After working with several smaller unions, including the Brotherhood of Locomotive Firemen, Debs led his union in a major ten-month strike against the CB&Q Railroad in 1888. Debs was instrumental in the founding of the American Railway Union (ARU), one of the nation's first industrial unions.
Explanation:
Refraction. Sound waves are bended when changed from one medium to another.