Which of the following shows third-person point of view?

The choice that demonstrates third-person point of view is characterized by the use of third-person pronouns such as "he," "she," "they," or "them." In the selected statement, the narrative describes "the boy and the girl," which removes the personal involvement of the speaker and instead focuses on the actions of the two characters from an outside perspective. This is indicative of third-person narration, as it allows the reader to understand the scene through the actions and interactions of those characters rather than through the personal experiences or opinions of the speaker.

In contrast, the other choices utilize either first-person or second-person perspectives. First-person point of view is represented in the statement where "I" is used, indicating the speaker's personal involvement ("I took a deep breath"). The second-person perspective is evident in the suggestion that "you should never ask someone out," directly addressing the reader. Thus, the choice that effectively exemplifies the third-person point of view is the one that describes characters and actions from an observer's standpoint.