In order of the questions, the answers are D,C,C,C,A,B,C,D,A,C,C,B,D. the main problems were that there were missing prepositions, a lack of pluralizing nouns, and incorrect verb tenses.
Answer:
In this case it would mean to extend the deadline
It's based on a boy the author saw during her day out with her child
D.) a dependent clause.
Because the underlined portion cannot stand on its own as a sentence, it is considered a dependent clause.