To make a strong argument, the writer or speaker must avoid logical fallacies.
This is because a fallacy is something that is untrue, thus if it was logical your reader might be persuaded against your argument. Basically, as a writer you don't want to contradict yourself and you only want to support one side of an argument.
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Answer:
C. Alcohols
Explanation:
More bodies of warter are being contaminated by oil spills and pesticides,ethanol and dangerous metals
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The main clause is clams and the subordinate clause is fresh used as an adjective.