It is effective, because such phrases as "Who in the world are you," "you could just have knocked me down with a feather," and "went out to Californy" show Miss Cynthia's emotions and the way she really talks.
Explanation:
According to this excerpt from "The Softening of Miss Cynthia" by Lucy Maud Montgomery, there is a dialogue between two people about someone's death and reuniting with his aunt.
The statement that best describes the dialogue in this excerpt is option C
