Answer:
4) The narrative will change depending on the narrator's tone and point-of-view.
Explanation:
It is the <em>narrator's role </em>to tell the readers/audiences about what's happening in the story. He/She becomes the<em><u> readers' lens, </u></em>thus, their knowledge will largely rely on what is being narrated.
It is important to carefully pick a narrator when planning to write a narrative. A story can take a first-person perspective wherein the reader will have a deep connection with the main character in the story. However, his point-of-view will only be limited to what that character thinks. It can take the second-person perspective wherein<u><em> the writer or author wants to directly convey his message to the reader.</em></u> Another perspective is the third-person wherein the reader will know everything that is happening in the story. A change in perspective changes the tone of the narrator, as well as his point-of-view. This largely affects the readers'/audiences' understanding.
C. The quarterback scored in the fourth quarter
D is not your answer. Someone who is bitter and exhausted has learned something that made them bitter and exhausted. They have changed.
C is not your answer. We have a hook here. We're drawn in to find out why she is different. That's not a flat character.
A is not your answer. These twins have a conflict. It is a natural way to develop a story.
B as charming as he sounds, his charm and wit lead us nowhere. He is a foil for the main character. Our pleasure in him is only momentary. B is the answer.

In the English language, the word "who" is almost always used as a pronoun.
It represents a person, similar to the words "I" and "me".