Final answer:
The phrases "they pass," "they explain," and "they walk" are all in the third-person plural point of view, which uses 'they' and refers to multiple people or entities.
Step-by-step explanation:
The point of view (POV) represented by the phrases "they pass," "they explain," and "they walk" is B) Third plural. In English grammar, the third-person point of view is used when the speaker or writer is talking about people or things other than himself or the audience. This point of view can be singular or plural, with singular third-person making use of pronouns like "he," "she," or "it," and plural using "they." Since the given phrases use "they," which refers to more than one individual, it is the third-person plural point of view. This is different from second-person narration, which directly addresses the reader using "you" and "your," and third-person limited narration, where the narrator may be impartial but only has insight into one character's perspective.