Expository writings is explaining something you need coheronce
Children, is the correct answer. If that is not the sentence you told me to look at, you can put it in the comment's
Im thinking that it is coast
B. Asserted Defintion: Assert: Forcefully state a opinion.
This would be the most likely answer, considering that she wants to talk about what she thinks should be done with the crime factor of the city.
To my mind, the answer ( B ) is the inappropriate sentence. In a formal writing informal tone must be avoided as well as colloquial expressions.