IMO CMeaning of the sentence: The cat in the hat is a whimsical story about a six foot tall cat visiting two children and the story employed clever rhymes and interesting plot twists and the story was commissioned in response to widespread criticism of simple and boring primers that were used to teach children to read.
With that in mind, lets look at the options:
A. children, were commissioned, employing clever rhymes and interesting plot twists, in response to
employing here is modifying were commissioned, which is incorrect. employing should modify the phrase "a whimsical story about a six-foot-tall cat visiting two bored children"B. children, was commissioned and employed clever rhymes and interesting plot twists, as a response to
incorrect idiom used. the idiom used should be "in response to". Also was commissioned and employed changes the meaning of the sentence.C. children, employing clever rhymes and interesting plot twists, was commissioned in response to
Correct. Verb + ing (employing) correctly modifies the phrase "a whimsical story about a six-foot-tall cat visiting two bored children". Also was commissioned is in agreement with the subject (The cat in the hat)D. children, that employed clever rhymes and interesting plot twists , was commissioned due to
there should be no comma before that employed. Also, due to is incorrect in context of the sentence. It should be in response to.E. children and employing clever rhymes and interesting plot twists were commissioned due to
Subject-Verb inagreement. The subject (The cat in the hat) is singular and the verb were commissioned is plural.Answer: C