Answer: I don't completely know what excerpt you are talking about, but from what I've searched up, I'm going to assume this is the correct one.
Explanation: The effects of using an omniscient narrator in this excerpt that it allows readers to see both Beatrice’s and Luma’s sides of the story.
What is omniscient narrator?
Omniscient narrator, often seen speaking in the voice of the author himself, assumes the omniscient idea of the subject being discussed: deep down in private thoughts, which tells about hidden or secret events.
What is an omniscient person?
Omniscient person who has all the knowledge or infinite awareness.
Hence, the correct answer is Option A