______ is a way in which new words may be formed from already existing words by subtractin

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______ is a way in which new words may be formed from already existing words by subtracting an affix which is thought to be part of the old word.

A.Affixation

B.Back-formation

C.Insertion

D.Addition

请帮忙给出正确答案和分析,谢谢!

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