What perspective is characterized by the narrator sharing only their own thoughts?

The perspective characterized by the narrator sharing only their own thoughts is first person limited. In this narrative style, the story is told from the viewpoint of a single character, using first-person pronouns such as "I" or "my." The reader gets direct insight into this character's inner thoughts, feelings, and experiences, but they do not have access to the thoughts or experiences of other characters. This limited viewpoint allows for an intimate understanding of the narrator's perspective while keeping the narrative focused and personal.

In contrast, the third person omniscient perspective provides a broader view by allowing the narrator to share the thoughts and feelings of multiple characters. Second person is a unique narrative style that involves addressing the reader directly using "you," making them a character in the story rather than focusing on a person's internal monologue. First person omniscient would suggest that the narrator has access to the thoughts of multiple characters while still using the first-person perspective, which is not the case in first person limited. Thus, first person limited is indeed the correct answer, as it aligns perfectly with the notion of sharing only the narrator's own thoughts.