Answer: D) Serves to change the form of the same very word.
Explanation for this question is being written.
Answer: D) Its ending.
Answer: B) Inflection
Answer: A) A derived stem.
Answer: A) Creating new lexemes by adding affixes (prefixes or suffixes) to an existing base.
Answer: A) Who's
Answer: B) Morphologically
Answer: C) More than one; present tense, 3rd person singular.
Answer: D) Grammatical
Answer: A) [: 3, sg], [uFin] she, it [u: 3, sg], [Fin]-s.
Answer: A) Derivational
Answer: A) Invariable
Answer: C) Using entirely different roots for different forms of a word.
Answer: D) Foot-FeetChild-ChildrenWoman-Women
Answer: C) Affixation
Answer: A) Synthetical grammatical forms.
Answer: B) Adding a morpheme to produce a new word and a different lexeme.
Answer: A) MICE