According to the dictionary, -ment can refer to an action, a place, or a state resulting from an action. This definition is useful to know because -ment functions as a

The element -ment is added to the end of a word to change its meaning, so it is a suffix. A root carries a word’s main meaning, a prefix comes at the beginning, and a verb is a type of word rather than a word part. The correct choice is “suffix.”

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