Final answer:
The paragraph in question is written in past tense and from a third-person point of view, as indicated by the use of pronouns and verb tenses.
Step-by-step explanation:
If we analyze the examples and information provided, we can conclude that the paragraph on page 154 beginning with “Montag watched the great dust settle…” is likely written in past tense and from a third-person point of view. The past tense is signified by verbs that denote actions that have already occurred. Third-person narration is indicated by the use of pronouns such as 'he', 'she', or 'they', and by not using 'I', 'you', or 'we' in relation to the narrator. An example of this is the contrast in narration style seen in the two passages given, one using present tense ('I sit') and the other one using past tense ('I sat'), with both examples highlighting the lack of first-person narration in the paragraph in question.