Prefix: affix added to the beginning of a word.
combining form: a word part which must attach to a word in order to be useable in a word.
suffix: affix added to the end of a word.
inflection: affix that gives grammatical meaning such as tense or number.
affix: syllable added to a root word to change its meaning.
comparative: degree of comparison formed by adding (er).
love: root word of lovable.
superlative: degree of comparison formed by adding (est).
bound morpheme: modified form of a word that occurs only in combination.
free morpheme: an independent word.
Answer:
metaphor
Explanation: The sentence is describing without using like or as.
Impromptu is an unrehearsed speech. Not rehearsing would not allow speakers to gather 100% of their thoughts.
Autistic children sometimes can't understand as well or as fast as "normal" children, so they may need more explanation or a simpler form of communication.