Answer :
Meat - packing industry denied that there was a problem and fought against federal oversight.
What is Meat- packing industry?
Meat-packing industry refers to the processing, packing and distributing of livestock into meat.
What is denied?
Denied means to refuse.
What is a problem?
Problem means which difficult to understand.
What is fought?
Fought means to use physical force against something or someone.
What is federal?
Federal means to form a government.
What is oversight?
Oversight is something which is not noticed.
Hence option (D) is correct.
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