Suffixes are not needed if word has prefix is the correct statement.
A suffix can make a word/stem of a word a noun, verb, adverb, or adjective.
ity, -ty quality of inactivity, veracity, parity, serenity
-ment condition of argument, endorsement, punishment
-ness state of being heaviness, sadness, rudeness, testiness
Hence the correct option is A.
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