When writing a piece of fiction you need to decide from which perspective you are going to tell the story. If the pronouns used are "she", "he" and "they" is because the narrator is telling the story in a third person point of view. The third person narrator can be omniscient or limited. An omniscient narrator knows everything, thoughts and feelings, about all of the characters. However, in the example given, the narrator only knows the main character in detail and just a few ideas of the other characters, this is why he is a third person limited narrator.
The answer should be C. Third person omniscient. A narrator in this point of view, narrates the story. The narrator is aware of everything going on, and all the character's feelings. Hope this helps!:)
